Description of problem:

I'm running Fedora 9 on a Lenovo Thinkpad T43P.  I've seen emacs crash four times in the last three weeks.  It seems to happen when running GNUS and fetching e-mail over IMAP, although that may not have anything to do with it.  It just happened again this evening.  I saw this in my .xsession-errors file:

Locking assertion failure.  Backtrace:
#0 /usr/lib/libxcb-xlib.so.0 [0x3cc767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_lock+0x2e) [0x3cc90e]
#2 /usr/lib/libX11.so.6 [0x4311109]
#3 /usr/lib/libX11.so.6(XCreatePixmap+0x26) [0x42e6d06]
#4 /usr/lib/libgdk-x11-2.0.so.0(gdk_pixmap_new+0x21f) [0x4b42ed6]
#5 /usr/lib/libgdk-x11-2.0.so.0(gdk_window_begin_paint_region+0x1f5) [0x4b19b41]
#6 /usr/lib/libgtk-x11-2.0.so.0(gtk_main_do_event+0x23a) [0x484557d]
#7 /usr/lib/libgdk-x11-2.0.so.0 [0x4b1d0bd]
#8 /usr/lib/libgdk-x11-2.0.so.0(gdk_window_process_all_updates+0xcc) [0x4b1d218]
#9 emacs [0x80cc9f2]
#10 emacs [0x80ccaa7]
#11 emacs [0x80cd105]
#12 emacs [0x80cd173]
#13 /usr/lib/libX11.so.6(_XError+0x109) [0x4309a49]
#14 /usr/lib/libX11.so.6 [0x4311ac8]
#15 /usr/lib/libX11.so.6(_XEventsQueued+0x55) [0x4312435]
#16 /usr/lib/libX11.so.6(XPending+0x68) [0x42fa428]
#17 /usr/lib/libgdk-x11-2.0.so.0 [0x4b328db]
#18 /usr/lib/libgdk-x11-2.0.so.0 [0x4b35e6e]
#19 /lib/libglib-2.0.so.0(g_main_context_prepare+0x1c2) [0x18ed42]
Locking assertion failure.  Backtrace:
#0 /usr/lib/libxcb-xlib.so.0 [0x3cc767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_lock+0x2e) [0x3cc90e]
#2 /usr/lib/libX11.so.6 [0x4311109]
#3 /usr/lib/libX11.so.6(XFlush+0x29) [0x42e9b39]
#4 /usr/lib/libgdk-x11-2.0.so.0(gdk_display_flush+0xa0) [0x4b26384]
#5 /usr/lib/libgdk-x11-2.0.so.0 [0x4b1d12c]
#6 /usr/lib/libgdk-x11-2.0.so.0(gdk_window_process_all_updates+0xf8) [0x4b1d244]
#7 emacs [0x80cc9f2]
#8 emacs [0x80ccaa7]
#9 emacs [0x80cd105]
#10 emacs [0x80cd173]
#11 /usr/lib/libX11.so.6(_XError+0x109) [0x4309a49]
#12 /usr/lib/libX11.so.6 [0x4311ac8]
#13 /usr/lib/libX11.so.6(_XEventsQueued+0x55) [0x4312435]
#14 /usr/lib/libX11.so.6(_XFlush+0x42) [0x43124c2]
#15 /usr/lib/libX11.so.6(XFlush+0x31) [0x42e9b41]
#16 /usr/lib/libgdk-x11-2.0.so.0(gdk_display_flush+0xa0) [0x4b26384]
#17 /usr/lib/libgdk-x11-2.0.so.0 [0x4b1d12c]
#18 /usr/lib/libgdk-x11-2.0.so.0(gdk_window_process_all_updates+0xf8) [0x4b1d244]
#19 emacs [0x80cc9f2]
X protocol error: BadValue (integer parameter out of range for operation) on protocol request 77


Version-Release number of selected component (if applicable):

emacs-22.2-5.fc9.i386
gtk2-devel-2.12.12-1.fc9.i386
libX11-1.1.4-1.fc9.i386
libxcb-1.1-5.fc9.i386

How reproducible:

Run emacs.  I start it from a button on the panel.  Run GNUS.  Fetch e-mail over IMAP and see if emacs crashes.  This is very intermittent, and it works most of the time.  It seems to fail more often shortly after a reboot.