screen flickers with black spots in online video chat

[Rovin]

Binary package hint: firefox-3.5

Firefox worked fine in Ubuntu 9.04. Upgraded to 9.10 and the black flickers started then.

ProblemType: Bug
Architecture: i386
Date: Fri Oct 30 18:39:20 2009
DistroRelease: Ubuntu 9.10
NonfreeKernelModules: nvidia
Package: firefox-3.5 3.5.3+build1+nobinonly-0ubuntu6
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: firefox-3.5
Uname: Linux 2.6.31-14-generic i686
XsessionErrors:
 (gnome-settings-daemon:2667): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (gnome-settings-daemon:2667): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (polkit-gnome-authentication-agent-1:2810): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (nautilus:2764): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed