Comment 54 for bug 259808

Quite similar bug here:

[mi] EQ overflowing. The server is probably stuck in an infinite loop.

Backtrace:
0: /usr/bin/X (xorg_backtrace+0x28) [0x4a3238]
1: /usr/bin/X (mieqEnqueue+0x1f4) [0x4a2ab4]
2: /usr/bin/X (xf86PostMotionEventP+0xc4) [0x47ce94]
3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fe6668d1000+0x53cf) [0x7fe6668d63cf]
4: /usr/bin/X (0x400000+0x6fca7) [0x46fca7]
5: /usr/bin/X (0x400000+0x11d1b3) [0x51d1b3]
6: /lib/libpthread.so.0 (0x7fe66adf1000+0xf8f0) [0x7fe66ae008f0]
7: /usr/bin/X (0x400000+0x65700) [0x465700]
8: /lib/libpthread.so.0 (0x7fe66adf1000+0xf8f0) [0x7fe66ae008f0]
9: /usr/lib/libpixman-1.so.0 (0x7fe66a756000+0x42f90) [0x7fe66a798f90]
10: /usr/lib/libpixman-1.so.0 (0x7fe66a756000+0x431c8) [0x7fe66a7991c8]
11: /usr/lib/libpixman-1.so.0 (pixman_blt+0x78) [0x7fe66a785818]
12: /usr/lib/xorg/modules/libfb.so (fbCopyNtoN+0x26a) [0x7fe667280b6a]
13: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7fe667cac000+0x61168) [0x7fe667d0d168]
14: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7fe667cac000+0x6539d) [0x7fe667d1139d]
15: /usr/bin/X (0x400000+0xd8110) [0x4d8110]
16: /usr/bin/X (0x400000+0xd182e) [0x4d182e]
17: /usr/bin/X (0x400000+0x30c3c) [0x430c3c]
18: /usr/bin/X (0x400000+0x261aa) [0x4261aa]
19: /lib/libc.so.6 (__libc_start_main+0xfd) [0x7fe669ae9c4d]
20: /usr/bin/X (0x400000+0x25d59) [0x425d59]

Steps to reproduce:

Latest (with all the latest updates as of right now) Ubuntu Lucid (Stable, 10.04).

1. start Firefox 3.6.3
2. open a second window (not tab!)
3. go to http://www.ardmediathek.de/ard/servlet/
4. Xorg hangs

in most cases, the X screen is then locked with the backtrace shown above.

Seems to be a Flash plugin concurrency issue in Firefox.

    npwrapper.libflashplayer.so
    Version: Shockwave Flash 10.1 r53

And: graphics chipset is not ATI, but integrated Intel. GL mode does not matter -- problem persists in 3D and 2D desktop mode.