Here' something more that I have found: This is what bug-buddy (with gnome-dbg packages installed) says:
System: Linux 2.6.21.5 #2 PREEMPT Wed Aug 8 17:25:13 CEST 2007 i686 X Vendor: The X.Org Foundation X Vendor Release: 10300000 Selinux: Permissive Accessibility: Disabled GTK+ Theme: Clearlooks Icon Theme: Tango Memory status: size: 39137280 vsize: 39137280 resident: 21581824 share: 13660160 rss: 21581824 rss_rlim: 4294967295 CPU usage: start_time: 1190323044 rtime: 52 utime: 43 stime: 9 cutime:0 cstime: 0 timeout: 0 it_real_value: 0 frequency: 100 Backtrace was generated from '/usr/bin/gnome-background-properties' (no debugging symbols found) Using host libthread_db library "/lib/libthread_db.so.1". (no debugging symbols found) (no debugging symbols found) [Thread debugging using libthread_db enabled] [New Thread -1225417968 (LWP 4358)] 0xb77c1bce in __waitpid_nocancel () from /lib/libpthread.so.0 #0 0xb77c1bce in __waitpid_nocancel () from /lib/libpthread.so.0 #1 0xb7d9c865 in libgnomeui_segv_handle (signum=11) at gnome-ui-init.c:872 #2 <signal handler called> #3 0xb781722e in g_slice_alloc () from /usr/lib/libglib-2.0.so.0 #4 0xb781c7d3 in g_string_sized_new () from /usr/lib/libglib-2.0.so.0 #5 0xb781c845 in g_string_new () from /usr/lib/libglib-2.0.so.0 #6 0xb77ec543 in g_file_error_from_errno () from /usr/lib/libglib-2.0.so.0 #7 0xb77ec7d0 in g_build_filename () from /usr/lib/libglib-2.0.so.0 #8 0x08051911 in gnome_wp_xml_load_list () #9 0x0804def9 in main () Thread 1 (Thread -1225417968 (LWP 4358)): #0 0xb77c1bce in __waitpid_nocancel () from /lib/libpthread.so.0 No symbol table info available. #1 0xb7d9c865 in libgnomeui_segv_handle (signum=11) at gnome-ui-init.c:872 estatus = -1079239464 sa = {__sigaction_handler = {sa_handler = 0, sa_sigaction = 0}, sa_mask = {__val = {3086146784, 0, 0, 0, 0, 3086209596, 3215727680, 3215727956, 3860694031, 70, 3077018588, 3079621296, 3084792979, 226034278, 3086225396, 3084764468, 3086105344, 3215727744, 3086164451, 3086105784, 3069555768, 1, 1, 0, 3084793039, 87, 3084738560, 3085339143, 3085903448, 3085339008, 3215727832, 3084884560}}, sa_flags = -1209628215, sa_restorer = 0xb7ef0ba0 <xmlIsIdeographicGroup+584>} pid = 0 in_segv = 1 #2 <signal handler called> No symbol table info available. #3 0xb781722e in g_slice_alloc () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #4 0xb781c7d3 in g_string_sized_new () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #5 0xb781c845 in g_string_new () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #6 0xb77ec543 in g_file_error_from_errno () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #7 0xb77ec7d0 in g_build_filename () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #8 0x08051911 in gnome_wp_xml_load_list () No symbol table info available. #9 0x0804def9 in main () No symbol table info available. #0 0xb77c1bce in __waitpid_nocancel () from /lib/libpthread.so.0 ----------- .xsession-errors (6 sec old) --------------------- (xfce4-menu-plugin:2994): libxfce4util-WARNING **: Could not get contents of file /home/ondra/.local/share/applications//googleearth.desktop Window Title: 'Desktop Background Preferences'; Application Name: 'gnome-background-properties'; Class: 'Gnome-background-properties'; Geometry: 360x418+336+199 (gnome-background-properties:4358): background-properties-WARNING **: Unknown Tag: comment I/O error : Is a directory //usr/share/gnome-background-properties:1: parser error : Document is empty ^ //usr/share/gnome-background-properties:1: parser error : Start tag expected, '<' not found ^ I/O error : Is a directory Window Title: 'Bug Buddy'; Application Name: 'Bug Buddy'; Class: 'Bug-buddy'; Geometry: 504x208+264+304 -------------------------------------------------- And I have finally found the cause of the problem: /usr/share/gnome-background-properties is a directory. When I delete it, everything works again (except for there are no system-wide wallpapers anymore)
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