diff --git a/src/st_list.c b/src/st_list.c
index 949696a..c2809be 100644
--- a/src/st_list.c
+++ b/src/st_list.c
@@ -662,7 +662,9 @@ void mwSametimeList_get(struct mwGetBuffer *b, struct mwSametimeList *l) {
   g_return_if_fail(b != NULL);
 
   mwString_get(b, &str);
-  list_get(str, l);
-  g_free(str);
+  if (str) {
+    list_get(str, l);
+    g_free(str);
+  }
 }
 
diff --git a/src/st_list.c.crash b/src/st_list.c.crash
new file mode 100644
index 0000000..949696a
--- /dev/null
+++ b/src/st_list.c.crash
@@ -0,0 +1,668 @@
+
+/*
+  Meanwhile - Unofficial Lotus Sametime Community Client Library
+  Copyright (C) 2004  Christopher (siege) O'Brien
+  
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Library General Public
+  License as published by the Free Software Foundation; either
+  version 2 of the License, or (at your option) any later version.
+  
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Library General Public License for more details.
+  
+  You should have received a copy of the GNU Library General Public
+  License along with this library; if not, write to the Free
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <stdio.h>
+#include <string.h>
+#include <glib/gstring.h>
+
+#include "mw_debug.h"
+#include "mw_util.h"
+#include "mw_st_list.h"
+
+
+struct mwSametimeList {
+  guint ver_major;
+  guint ver_minor;
+  guint ver_micro;
+
+  GList *groups;
+};
+
+
+struct mwSametimeGroup {
+  struct mwSametimeList *list;
+
+  enum mwSametimeGroupType type;
+  char *name;
+  char *alias;
+  gboolean open;
+
+  GList *users;
+};
+
+
+struct mwSametimeUser {
+  struct mwSametimeGroup *group;
+
+  enum mwSametimeUserType type;
+  struct mwIdBlock id;
+  char *name;
+  char *alias;
+};
+
+
+static void user_free(struct mwSametimeUser *u) {
+  struct mwSametimeGroup *g;
+
+  g = u->group;
+  g->users = g_list_remove(g->users, u);
+
+  mwIdBlock_clear(&u->id);
+  g_free(u->name);
+  g_free(u->alias);
+  g_free(u);
+}
+
+
+static void group_free(struct mwSametimeGroup *g) {
+  struct mwSametimeList *l;
+
+  l = g->list;
+  l->groups = g_list_remove(l->groups, g);
+
+  while(g->users)
+    mwSametimeUser_free(g->users->data);
+
+  g_free(g->name);
+  g_free(g->alias);
+  g_free(g);
+}
+
+
+static void list_free(struct mwSametimeList *l) {
+  while(l->groups)
+    mwSametimeGroup_free(l->groups->data);
+
+  g_free(l);
+}
+
+
+struct mwSametimeList *
+mwSametimeList_new() {
+
+  struct mwSametimeList *stl;
+
+  stl = g_new0(struct mwSametimeList, 1);
+  stl->ver_major = ST_LIST_MAJOR;
+  stl->ver_minor = ST_LIST_MINOR;
+  stl->ver_micro = ST_LIST_MICRO;
+
+  return stl;
+}
+
+
+void mwSametimeList_setMajor(struct mwSametimeList *l, guint v) {
+  g_return_if_fail(l != NULL);
+  l->ver_major = v;
+}
+
+
+guint mwSametimeList_getMajor(struct mwSametimeList *l) {
+  g_return_val_if_fail(l != NULL, 0);
+  return l->ver_major;
+}
+
+
+void mwSametimeList_setMinor(struct mwSametimeList *l, guint v) {
+  g_return_if_fail(l != NULL);
+  l->ver_minor = v;
+}
+
+
+guint mwSametimeList_getMinor(struct mwSametimeList *l) {
+  g_return_val_if_fail(l != NULL, 0);
+  return l->ver_minor;
+}
+
+
+void mwSametimeList_setMicro(struct mwSametimeList *l, guint v) {
+  g_return_if_fail(l != NULL);
+  l->ver_micro = v;
+}
+
+
+guint mwSametimeList_getMicro(struct mwSametimeList *l) {
+  g_return_val_if_fail(l != NULL, 0);
+  return l->ver_micro;
+}
+
+
+GList *mwSametimeList_getGroups(struct mwSametimeList *l) {
+  g_return_val_if_fail(l != NULL, NULL);
+  return g_list_copy(l->groups);
+}
+
+
+struct mwSametimeGroup *
+mwSametimeList_findGroup(struct mwSametimeList *l,
+			 const char *name) {
+  GList *s;
+
+  g_return_val_if_fail(l != NULL, NULL);
+  g_return_val_if_fail(name != NULL, NULL);
+  g_return_val_if_fail(*name != '\0', NULL);
+
+  for(s = l->groups; s; s = s->next) {
+    struct mwSametimeGroup *g = s->data;
+    if(! strcmp(g->name, name)) return g;
+  }
+
+  return NULL;
+}
+
+
+void mwSametimeList_free(struct mwSametimeList *l) {
+  g_return_if_fail(l != NULL);
+  list_free(l);
+}
+
+
+struct mwSametimeGroup *
+mwSametimeGroup_new(struct mwSametimeList *list,
+		    enum mwSametimeGroupType type,
+		    const char *name) {
+  
+  struct mwSametimeGroup *stg;
+
+  g_return_val_if_fail(list != NULL, NULL);
+  g_return_val_if_fail(name != NULL, NULL);
+  g_return_val_if_fail(*name != '\0', NULL);
+
+  stg = g_new0(struct mwSametimeGroup, 1);
+  stg->list = list;
+  stg->type = type;
+  stg->name = g_strdup(name);
+
+  list->groups = g_list_append(list->groups, stg);
+
+  return stg;
+}
+
+
+enum mwSametimeGroupType mwSametimeGroup_getType(struct mwSametimeGroup *g) {
+  g_return_val_if_fail(g != NULL, mwSametimeGroup_UNKNOWN);
+  return g->type;
+}
+
+
+const char *mwSametimeGroup_getName(struct mwSametimeGroup *g) {
+  g_return_val_if_fail(g != NULL, NULL);
+  return g->name;
+}
+
+
+void mwSametimeGroup_setAlias(struct mwSametimeGroup *g,
+			      const char *alias) {
+  g_return_if_fail(g != NULL);
+
+  g_free(g->alias);
+  g->alias = g_strdup(alias);
+}
+
+
+const char *mwSametimeGroup_getAlias(struct mwSametimeGroup *g) {
+  g_return_val_if_fail(g != NULL, NULL);
+  return g->alias;
+}
+
+
+void mwSametimeGroup_setOpen(struct mwSametimeGroup *g, gboolean open) {
+  g_return_if_fail(g != NULL);
+  g->open = open;
+}
+
+
+gboolean mwSametimeGroup_isOpen(struct mwSametimeGroup *g) {
+  g_return_val_if_fail(g != NULL, FALSE);
+  return g->open;
+}
+
+
+struct mwSametimeList *mwSametimeGroup_getList(struct mwSametimeGroup *g) {
+  g_return_val_if_fail(g != NULL, NULL);
+  return g->list;
+}
+
+
+GList *mwSametimeGroup_getUsers(struct mwSametimeGroup *g) {
+  g_return_val_if_fail(g != NULL, NULL);
+  return g_list_copy(g->users);
+}
+
+
+struct mwSametimeUser *
+mwSametimeGroup_findUser(struct mwSametimeGroup *g,
+			 struct mwIdBlock *user) {
+  GList *s;
+
+  g_return_val_if_fail(g != NULL, NULL);
+  g_return_val_if_fail(user != NULL, NULL);
+
+  for(s = g->users; s; s = s->next) {
+    struct mwSametimeUser *u = s->data;
+    if(mwIdBlock_equal(user, &u->id)) return u;
+  }
+
+  return NULL;
+}
+
+
+void mwSametimeGroup_free(struct mwSametimeGroup *g) {
+  g_return_if_fail(g != NULL);
+  g_return_if_fail(g->list != NULL);
+  group_free(g);
+}
+
+
+struct mwSametimeUser *
+mwSametimeUser_new(struct mwSametimeGroup *group,
+		   enum mwSametimeUserType type,
+		   struct mwIdBlock *id) {
+
+  struct mwSametimeUser *stu;
+
+  g_return_val_if_fail(group != NULL, NULL);
+  g_return_val_if_fail(id != NULL, NULL);
+  
+  stu = g_new0(struct mwSametimeUser, 1);
+  stu->group = group;
+  stu->type = type;
+  mwIdBlock_clone(&stu->id, id);
+
+  group->users = g_list_append(group->users, stu);
+  
+  return stu;
+}
+
+
+struct mwSametimeGroup *mwSametimeUser_getGroup(struct mwSametimeUser *u) {
+  g_return_val_if_fail(u != NULL, NULL);
+  return u->group;
+}
+
+
+enum mwSametimeUserType mwSametimeUser_getType(struct mwSametimeUser *u) {
+  g_return_val_if_fail(u != NULL, mwSametimeUser_UNKNOWN);
+  return u->type;
+}
+
+
+const char *mwSametimeUser_getUser(struct mwSametimeUser *u) {
+  g_return_val_if_fail(u != NULL, NULL);
+  return u->id.user;
+}
+
+
+const char *mwSametimeUser_getCommunity(struct mwSametimeUser *u) {
+  g_return_val_if_fail(u != NULL, NULL);
+  return u->id.community;
+}
+
+
+void mwSametimeUser_setShortName(struct mwSametimeUser *u, const char *name) {
+  g_return_if_fail(u != NULL);
+  g_free(u->name);
+  u->name = g_strdup(name);
+}
+
+
+const char *mwSametimeUser_getShortName(struct mwSametimeUser *u) {
+  g_return_val_if_fail(u != NULL, NULL);
+  return u->name;
+}
+
+
+void mwSametimeUser_setAlias(struct mwSametimeUser *u, const char *alias) {
+  g_return_if_fail(u != NULL);
+  g_free(u->alias);
+  u->alias = g_strdup(alias);
+}
+
+
+const char *mwSametimeUser_getAlias(struct mwSametimeUser *u) {
+  g_return_val_if_fail(u != NULL, NULL);
+  return u->alias;
+}
+
+
+void mwSametimeUser_free(struct mwSametimeUser *u) {
+  g_return_if_fail(u != NULL);
+  g_return_if_fail(u->group != NULL);
+  user_free(u);
+}
+
+
+static void str_replace(char *str, char from, char to) {
+  if(! str) return;
+  for(; *str; str++) if(*str == from) *str = to;
+}
+
+
+static char user_type_to_char(enum mwSametimeUserType type) {
+  switch(type) {
+  case mwSametimeUser_NORMAL:    return '1';
+  case mwSametimeUser_EXTERNAL:  return '2';
+  case mwSametimeUser_UNKNOWN:
+  default:                       return '9';
+  }
+}
+
+
+static enum mwSametimeUserType user_char_to_type(char type) {
+  switch(type) {
+  case '1':  return mwSametimeUser_NORMAL;
+  case '2':  return mwSametimeUser_EXTERNAL;
+  default:   return mwSametimeUser_UNKNOWN;
+  }
+}
+
+
+static void user_put(GString *str, struct mwSametimeUser *u) {
+  char *id, *name, *alias;
+  char type;
+  
+  id = g_strdup(u->id.user);
+  name = g_strdup(u->name);
+  alias = g_strdup(u->alias);
+  type = user_type_to_char(u->type);
+
+  if(id) str_replace(id, ' ', ';');
+  if(name) str_replace(name, ' ', ';');
+  if(alias) str_replace(alias, ' ', ';');
+
+  if(!name && alias) {
+    name = alias;
+    alias = NULL;
+  }
+
+  g_string_append_printf(str, "U %s%c:: %s,%s\r\n",
+			 id, type, (name? name: ""), (alias? alias: ""));
+
+  g_free(id);
+  g_free(name);
+  g_free(alias);  
+}
+
+
+static char group_type_to_char(enum mwSametimeGroupType type) {
+  switch(type) {
+  case mwSametimeGroup_NORMAL:   return '2';
+  case mwSametimeGroup_DYNAMIC:  return '3';
+  case mwSametimeGroup_UNKNOWN:
+  default:                       return '9';
+  }
+}
+
+
+static enum mwSametimeGroupType group_char_to_type(char type) {
+  switch(type) {
+  case '2':  return mwSametimeGroup_NORMAL;
+  case '3':  return mwSametimeGroup_DYNAMIC;
+  default:   return mwSametimeGroup_UNKNOWN;
+  }
+}
+
+
+static void group_put(GString *str, struct mwSametimeGroup *g) {
+  char *name, *alias;
+  char type;
+  GList *gl;
+
+  name = g_strdup(g->name);
+  alias = g_strdup((g->alias)? g->alias: name);
+  type = group_type_to_char(g->type);
+
+  str_replace(name, ' ', ';');
+  str_replace(alias, ' ', ';');
+
+  g_string_append_printf(str, "G %s%c %s %c\r\n",
+			 name, type, alias, (g->open? 'O':'C'));
+
+  for(gl = g->users; gl; gl = gl->next) {
+    user_put(str, gl->data);
+  }
+
+  g_free(name);
+  g_free(alias);
+}
+
+
+/** composes a GString with the written contents of a sametime list */
+static GString *list_store(struct mwSametimeList *l) {
+  GString *str;
+  GList *gl;
+
+  g_return_val_if_fail(l != NULL, NULL);
+
+  str = g_string_new(NULL);
+  g_string_append_printf(str, "Version=%u.%u.%u\r\n",
+			 l->ver_major, l->ver_minor, l->ver_micro);
+
+  for(gl = l->groups; gl; gl = gl->next) {
+    group_put(str, gl->data);
+  }
+
+  return str;
+}
+
+
+char *mwSametimeList_store(struct mwSametimeList *l) {
+  GString *str;
+  char *s;
+
+  g_return_val_if_fail(l != NULL, NULL);
+
+  str = list_store(l);
+  s = str->str;
+  g_string_free(str, FALSE);
+  return s;
+}
+
+
+void mwSametimeList_put(struct mwPutBuffer *b, struct mwSametimeList *l) {
+  GString *str;
+  guint16 len;
+
+  g_return_if_fail(l != NULL);
+  g_return_if_fail(b != NULL);
+
+  str = list_store(l);
+  len = (guint16) str->len;
+  guint16_put(b, len);
+  mwPutBuffer_write(b, str->str, len);
+
+  g_string_free(str, TRUE);
+}
+
+
+static void get_version(const char *line, struct mwSametimeList *l) {
+  guint major = 0, minor = 0, micro = 0;
+  int ret;
+
+  ret = sscanf(line, "Version=%u.%u.%u\n", &major, &minor, &micro);
+  if(ret != 3) {
+    g_warning("strange sametime list version line:\n%s", line);
+  }
+
+  l->ver_major = major;
+  l->ver_minor = minor;
+  l->ver_micro = micro;
+}
+
+
+static struct mwSametimeGroup *get_group(const char *line,
+					 struct mwSametimeList *l) {
+  struct mwSametimeGroup *group;
+  char *name, *alias;
+  char type = '2', open = 'O';
+  int ret;
+
+  ret = strlen(line);
+  name = g_malloc0(ret);
+  alias = g_malloc0(ret);
+
+  ret = sscanf(line, "G %s %s %c\n",
+	       name, alias, &open);
+
+  if(ret < 3) {
+    g_warning("strange sametime list group line:\n%s", line);
+  }
+  
+  str_replace(name, ';', ' ');
+  str_replace(alias, ';', ' ');
+
+  if(name && *name) {
+    int l = strlen(name)-1;
+    type = name[l];
+    name[l] = '\0';
+  }
+
+  group = g_new0(struct mwSametimeGroup, 1);
+  group->list = l;
+  group->name = name;
+  group->type = group_char_to_type(type);
+  group->alias = alias;
+  group->open = (open == 'O');
+
+  l->groups = g_list_append(l->groups, group);
+
+  return group;
+}
+
+
+static void get_user(const char *line, struct mwSametimeGroup *g) {
+  struct mwSametimeUser *user;
+  struct mwIdBlock idb = { 0, 0 };
+  char *name, *alias = NULL;
+  char type = '1';
+  int ret;
+  
+  ret = strlen(line);
+  idb.user = g_malloc0(ret);
+  name = g_malloc0(ret);
+
+  ret = sscanf(line, "U %s %s",
+	       idb.user, name);
+
+  if(ret < 2) {
+    g_warning("strange sametime list user line:\n%s", line);
+  }
+
+  str_replace(idb.user, ';', ' ');
+  str_replace(name, ';', ' ');
+
+  if(idb.user && *idb.user) {
+    char *tmp = strstr(idb.user, "::");
+    if(tmp--) {
+      type = *(tmp);
+      *tmp = '\0';
+    }
+  }
+
+  if(name && *name) {
+    char *tmp = strrchr(name, ',');
+    if(tmp) {
+      *tmp++ = '\0';
+      if(*tmp) alias = tmp;
+    }
+  }
+
+  user = g_new0(struct mwSametimeUser, 1);
+  user->group = g;
+  user->id.user = idb.user;
+  user->type = user_char_to_type(type);
+  user->name = name;
+  user->alias = g_strdup(alias);
+  
+  g->users = g_list_append(g->users, user);
+}
+
+
+/** returns a line from str, and advances str */
+static char *fetch_line(char **str) {
+  char *start = *str;
+  char *end;
+
+  /* move to first non-whitespace character */
+  while(*start && g_ascii_isspace(*start)) start++;
+  if(! *start) return NULL;
+
+  for(end = start + 1; *end; end++) {
+    if(*end == '\n' || *end == '\r') {
+      *(end++) = '\0';
+      break;
+    }
+  }
+
+  *str = end;
+  return start;
+}
+
+
+static void list_get(const char *lines, struct mwSametimeList *l) {
+  char *s = (char *) lines;
+  char *line;
+
+  struct mwSametimeGroup *g = NULL;
+  
+  while( (line = fetch_line(&s)) ) {
+    switch(*line) {
+    case 'V':
+      get_version(line, l);
+      break;
+
+    case 'G':
+      g = get_group(line, l);
+      break;
+
+    case 'U':
+      get_user(line, g);
+      break;
+
+    default:
+      g_warning("unknown sametime list data line:\n%s", line);
+    }
+  }  
+}
+
+
+struct mwSametimeList *mwSametimeList_load(const char *data) {
+  struct mwSametimeList *l;
+
+  g_return_val_if_fail(data != NULL, NULL);
+  
+  l = mwSametimeList_new();
+  list_get(data, l);
+
+  return l;
+}
+
+
+void mwSametimeList_get(struct mwGetBuffer *b, struct mwSametimeList *l) {
+  char *str = NULL;
+
+  g_return_if_fail(l != NULL);
+  g_return_if_fail(b != NULL);
+
+  mwString_get(b, &str);
+  list_get(str, l);
+  g_free(str);
+}
+