firefox crashes after installing plugins

[Ohad]

Binary package hint: firefox-3.5

I'm on a fully updated (with "proposed") Karmic. Sequence of events:

1. Browsed to this URL:
http://tones.wolfram.com/gen/GRLNWaJbpIYXbE37IpHMc2TOuWhWlxDeWqBceijewQCZHNsG
Site requested a plugin to play.

2. Used the automatic plugin finder, and tried to install the recommended Gecko media player and an accompanying media playing plugin. At the end I was informed one was installed (the other wasn't?).

3. Upon refresh, I was again requested to install plugins. Both plugins showed up again, but this time the other (Gecko I think) was said to be installed..

4. After a sec of reloading the page FF crashes.

Note that even after the plugins were installed, the webpage won't play (I wasn't asked to install any more plugins, it just doesn't work).

ProblemType: Bug
Architecture: i386
Date: Thu Apr 29 00:41:39 2010
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
NonfreeKernelModules: nvidia
Package: firefox-3.5 3.5.9+nobinonly-0ubuntu0.9.10.1
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-21.59-generic
SourcePackage: firefox-3.5
Uname: Linux 2.6.31-21-generic i686