abrt 1.0.1 detected a crash.

How to reproduce
-----
1. gnome-shell -r
2.
3.

backtrace
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Core was generated by `mutter --mutter-plugins=libgnome-shell --sync'.
Program terminated with signal 11, Segmentation fault.
#0  0x0806f110 in meta_set_syncing (setting=1) at core/display.c:4108
	in core/display.c

Thread 1 (Thread 30425):
#0  0x0806f110 in meta_set_syncing (setting=1) at core/display.c:4108
No locals.
#1  0x08080381 in main (argc=1, argv=0xbfc98f84) at core/main.c:607
        act = {__sigaction_handler = {sa_handler = 
    0x8080a50 <sigchld_handler>, sa_sigaction = 0x8080a50 <sigchld_handler>}, 
          sa_mask = {__val = {0 <repeats 32 times>}}, sa_flags = 5, 
          sa_restorer = 0}
        empty_mask = {__val = {0 <repeats 32 times>}}
        log_domains = {0x0, 0x80c4ae4 "mutter", 0x80c4950 "Gtk", 
    0x80c4954 "Gdk", 0x80c4958 "GLib", 0x80c495d "Pango", 
    0x80c4963 "GLib-GObject", 0x80c4970 "GThread"}
        i = <value optimized out>
        ctx = 0xa03ba40

cmdline: mutter --mutter-plugins=libgnome-shell --sync
component: mutter
executable: /usr/bin/mutter
kernel: 2.6.31.6-166.fc12.i686.PAE
package: mutter-2.28.0-2.fc12
rating: 4
reason: Process was terminated by signal 11 (Segmentation fault)