Steps to reproduce: Haven't been able to reproduce consistently. Sometimes I can work 5-10 minutes before it happens - other times only 30 seconds... I've had it happen while using the image menu, right-click menu on the image, and the right-click menu on the layers... Stack trace: This is from --verbose --stack-trace-mode always: Parsing '/home/jbaker/.gimp-2.7/colorrc' loading menu '/opt/gimp-2.7/share/gimp/2.0/menus/image-menu.xml' for /image-menubar loading menu '/opt/gimp-2.7/share/gimp/2.0/menus/layers-menu.xml' for /layers-popup loading menu '/opt/gimp-2.7/share/gimp/2.0/menus/image-menu.xml' for /dummy-menubar /opt/gimp-2.7/bin/gimp-2.7: fatal error: Segmentation fault #0 0x00007f2ba4ca3bbf in waitpid () from /lib/libpthread.so.0 #1 0x00007f2ba4ec8622 in g_on_error_stack_trace () #2 0x0000000000479203 in gimp_eek (reason=0x736071 "fatal error", #3 0x0000000000479246 in gimp_fatal_error (message=) #4 0x000000000047a026 in gimp_sigfatal_handler (sig_num=) #5 #6 0x00007f2ba538ba47 in g_object_get () from /usr/lib/libgobject-2.0.so.0 #7 0x00000000005b1c2a in gimp_ui_manager_menu_item_select ( #8 0x00007f2ba538727d in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #9 0x00007f2ba539ce3b in ?? () from /usr/lib/libgobject-2.0.so.0 #10 0x00007f2ba539e432 in g_signal_emit_valist () #11 0x00007f2ba539e953 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #12 0x00007f2ba81b2da8 in gtk_menu_item_select () #13 0x00007f2ba81b682c in ?? () from /usr/lib/libgtk-x11-2.0.so.0 #14 0x00007f2ba81b71fd in ?? () from /usr/lib/libgtk-x11-2.0.so.0 #15 0x00007f2ba81adb82 in ?? () from /usr/lib/libgtk-x11-2.0.so.0 #16 0x00007f2ba81a7df8 in ?? () from /usr/lib/libgtk-x11-2.0.so.0 #17 0x00007f2ba53871cf in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #18 0x00007f2ba539cb1e in ?? () from /usr/lib/libgobject-2.0.so.0 #19 0x00007f2ba539e2bd in g_signal_emit_valist () #20 0x00007f2ba539e953 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #21 0x00007f2ba82b009e in ?? () from /usr/lib/libgtk-x11-2.0.so.0 #22 0x00007f2ba81a7df8 in ?? () from /usr/lib/libgtk-x11-2.0.so.0 #23 0x00007f2ba538727d in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 #24 0x00007f2ba539cb1e in ?? () from /usr/lib/libgobject-2.0.so.0 #25 0x00007f2ba539e2bd in g_signal_emit_valist () #26 0x00007f2ba539e953 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #27 0x00007f2ba82b009e in ?? () from /usr/lib/libgtk-x11-2.0.so.0 #28 0x00007f2ba81a1852 in gtk_main_do_event () #29 0x00007f2ba7e1af3c in ?? () from /usr/lib/libgdk-x11-2.0.so.0 #30 0x00007f2ba4eeb20a in g_main_context_dispatch () #31 0x00007f2ba4eee8e0 in ?? () from /usr/lib/libglib-2.0.so.0 #32 0x00007f2ba4eeedad in g_main_loop_run () from /usr/lib/libglib-2.0.so.0 #33 0x0000000000478b85 in app_run (full_prog_name=, #34 0x0000000000479976 in main (argc=1, argv=0x7fffb17fdba8) at main.c:397 (script-fu:9153): LibGimpBase-WARNING **: script-fu: gimp_wire_read(): error jbaker@jbaker-laptop:/opt/gimp-2.7/bin$ ############################# This is from gdb following these instructions: https://wiki.ubuntu.com/Backtrace Using the gdb like this completely locks the desktop - I have to switch to console to kill the gimp process.... GNU gdb 6.8-debian Copyright (C) 2008 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu"... (gdb) ^Vhandle SIG33 pass nostop noprint Signal Stop Print Pass to program Description SIG33 No No Yes Real-time event 33 (gdb) set pagination 0 (gdb) (gdb) run --verbose --stack-troace-mode always Starting program: /opt/gimp-2.7/bin/gimp-2.7 --verbose --stack-trace-mode always [Thread debugging using libthread_db enabled] [New Thread 0x7f49e7be2780 (LWP 8803)] This is a development version of GIMP. Debug messages may appear here. INIT: gimp_load_config Parsing '/home/jbaker/.gimp-2.7/unitrc' Parsing '/opt/gimp-2.7/etc/gimp/2.0/gimprc' Parsing '/home/jbaker/.gimp-2.7/gimprc' gimp_composite: use=yes, verbose=no Processor instruction sets: +mmx +sse +sse2 -3dnow -altivec -vis Adding theme 'Default' (/opt/gimp-2.7/share/gimp/2.0/themes/Default) Adding theme 'Small' (/opt/gimp-2.7/share/gimp/2.0/themes/Small) Writing '/home/jbaker/.gimp-2.7/themerc' Trying splash '/home/jbaker/.gimp-2.7/gimp-splash.png' ... failed Trying splash '/opt/gimp-2.7/share/gimp/2.0/images/gimp-splash.png' ... [New Thread 0x7f49dce2b950 (LWP 8806)] [New Thread 0x7f49dc62a950 (LWP 8807)] OK INIT: gimp_initialize INIT: gimp_real_initialize INIT: gui_initialize_after_callback INIT: gimp_restore Parsing '/home/jbaker/.gimp-2.7/parasiterc' Loading 'brush factory' data Loading 'pattern factory' data Loading 'palette factory' data Loading 'gradient factory' data Loading fonts Parsing '/home/jbaker/.gimp-2.7/templaterc' Parsing '/home/jbaker/.gimp-2.7/modulerc' INIT: gui_restore_callback clipboard: writable pixbuf format: image/png clipboard: writable pixbuf format: image/bmp clipboard: writable pixbuf format: image/x-bmp clipboard: writable pixbuf format: image/x-MS-bmp clipboard: writable pixbuf format: image/x-icon clipboard: writable pixbuf format: image/x-ico clipboard: writable pixbuf format: image/x-win-bitmap clipboard: writable pixbuf format: image/tiff clipboard: writable pixbuf format: image/jpeg ... all parsing output removed ... INIT: gimp_real_restore Parsing '/home/jbaker/.gimp-2.7/pluginrc' Starting extension: 'extension-script-fu' INIT: gui_restore_after_callback Parsing '/home/jbaker/.gimp-2.7/menurc' Parsing '/home/jbaker/.gimp-2.7/devicerc' Parsing '/home/jbaker/.gimp-2.7/controllerrc' Parsing '/home/jbaker/.gimp-2.7/colorrc' loading menu '/opt/gimp-2.7/share/gimp/2.0/menus/image-menu.xml' for /image-menubar sphere-designer is updating the progress too often sphere-designer is updating the progress too often loading menu '/opt/gimp-2.7/share/gimp/2.0/menus/image-menu.xml' for /dummy-menubar loading menu '/opt/gimp-2.7/share/gimp/2.0/menus/layers-menu.xml' for /layers-popup sphere-designer is updating the progress too often Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7f49e7be2780 (LWP 8803)] 0x00007f49e37a3a47 in g_object_get () from /usr/lib/libgobject-2.0.so.0 (gdb) (script-fu:8809): LibGimpBase-WARNING **: script-fu: gimp_wire_read(): error Other information: Ubuntu 9.04 default install. AMD Turion64 jbaker@jbaker-laptop:~/git/other/gimp$ cat .git/refs/heads/master e0453b44b16e3573b93d6348630c1e6a9fcfbede