segfault potentially freezing desktop

Binary package hint: nspluginwrapper

My gdm desktop froze shortly after switching from the browser to evolution with the only indication of an issue in my dmesg output:

 [ 2160.657067] show_signal_msg: 39 callbacks suppressed
[ 2160.657078] npviewer.bin[2825]: segfault at f3d8204c ip 00000000f61ffee7 sp 00000000ffbc4360 error 4 in libflashplayer.so[f5e60000+b2e000]
[ 2568.802900] npviewer.bin[4153]: segfault at 418 ip 00000000f60d6c86 sp 00000000ffc579d8 error 6 in libflashplayer.so[f5e87000+b2e000]
[ 2721.543352] radeon 0000:01:00.0: ffff8800b7cc9c00 reserve failed for wait
[ 2721.671594] radeon 0000:01:00.0: ffff8800b7cc9c00 reserve failed for wait
[ 2721.749144] radeon 0000:01:00.0: ffff8800b7cc9c00 reserve failed for wait
[ 2805.651509] radeon 0000:01:00.0: ffff8800b7cc9c00 reserve failed for wait
[ 2821.849805] radeon 0000:01:00.0: ffff8800b7cc9c00 reserve failed for wait
[ 2832.092521] radeon 0000:01:00.0: ffff8800b7cc9c00 reserve failed for wait
[ 2908.105530] radeon 0000:01:00.0: ffff8800b7cc9c00 reserve failed for wait
[ 2978.108448] radeon 0000:01:00.0: ffff8800b7cc9c00 reserve failed for wait
[ 3002.513082] radeon 0000:01:00.0: ffff8800b7cc9c00 reserve failed for wait
[ 3016.104561] radeon 0000:01:00.0: ffff8800b7cc9c00 reserve failed for wait
[ 3126.889605] npviewer.bin[4257]: segfault at 0 ip 00000000f61b1ed1 sp 00000000ffc95920 error 4 in libflashplayer.so[f5e12000+b2e000]

This is the second time my desktop froze in the last few days. I was able to switch to a console and save the dmesg output. Please let me know how to more precisely identify the reason for a frozen desktop.

Note the mouse pointer was still moving but other than that all other desktop output (inkl. time which is displayed in seconds) and system monitor output in the panel were frozen.

Anyway, I'm sure the segfaults of the flash player should be reported.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: nspluginwrapper 1.2.2-0ubuntu7
ProcVersionSignature: Ubuntu 2.6.35-24.42-generic 2.6.35.8
Uname: Linux 2.6.35-24-generic x86_64
Architecture: amd64
Date: Mon Jan 17 12:06:57 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcEnviron:
 PATH=(custom, user)
 LANG=de_AT.utf8
 SHELL=/bin/bash
SourcePackage: nspluginwrapper