I've asked another meta question about whether ESR versions of firefox merit support effort from the SE development team.
The issue
The user page screen layout is broken on Firefox (10.0.4 ESR) on CentOS 6.0. This is the version maintained by the CentOS distributors, which is presumably the same as the version maintained by Redhat. I have no idea whether this issue would affect a significant number of SE users.
Similar layout issues occur on Serverfault and Superuser, but not on DBA.SE or any of a sample of non-trio sites I checked (programmers.se, graphic design, english language and usage etc.
For what it's worth, the machine has a Quadro card with the NVidia drivers as opposed to the open-source nv ones. Otherwise the build is fairly vanilla with no custom kernel. The output from about:plugins is listed below:
Example screen shot:
about:plugins
Find more information about browser plugins at mozilla.org.
Find updates for installed plugins at mozilla.com/plugincheck.
Help for installing plugins is available from plugindoc.mozdev.org.
Shockwave Flash
File: nswrapper_64_64.libflashplayer.so
Version:
Shockwave Flash 11.2 r202
MIME Type Description Suffixes
application/x-shockwave-flash Shockwave Flash swf
application/futuresplash FutureSplash Player spl
QuickTime Plug-in 7.2.0
File: libtotem-narrowspace-plugin.so
Version:
The Totem 2.28.6 plugin handles video and audio streams.
MIME Type Description Suffixes
video/quicktime QuickTime video mov
video/mp4 MPEG-4 video mp4
image/x-macpaint MacPaint Bitmap image pntg
image/x-quicktime Macintosh Quickdraw/PICT drawing pict, pict1, pict2
video/x-m4v MPEG-4 video m4v
VLC Multimedia Plugin (compatible Totem 2.28.6)
File: libtotem-cone-plugin.so
Version:
The Totem 2.28.6 plugin handles video and audio streams.
MIME Type Description Suffixes
application/x-vlc-plugin VLC Multimedia Plugin
application/vlc VLC Multimedia Plugin
video/x-google-vlc-plugin VLC Multimedia Plugin
application/x-ogg Ogg multimedia file ogg
application/ogg Ogg multimedia file ogg
audio/ogg Ogg Audio oga
audio/x-ogg Ogg Audio ogg
video/ogg Ogg Video ogv
video/x-ogg Ogg Video ogg
application/annodex Annodex exchange format anx
audio/annodex Annodex Audio axa
video/annodex Annodex Video axv
video/mpeg MPEG video mpg, mpeg, mpe
audio/wav WAV audio wav
audio/x-wav WAV audio wav
audio/mpeg MP3 audio mp3
application/x-nsv-vp3-mp3 NullSoft video nsv
video/flv Flash video flv
application/x-totem-plugin Totem Multimedia plugin
audio/midi MIDI audio mid, midi
Windows Media Player Plug-in 10 (compatible; Totem)
File: libtotem-gmp-plugin.so
Version:
The Totem 2.28.6 plugin handles video and audio streams.
MIME Type Description Suffixes
application/x-mplayer2 AVI video avi, wma, wmv
video/x-ms-asf-plugin ASF video asf, wmv
video/x-msvideo AVI video asf, wmv
video/x-ms-asf ASF video asf
video/x-ms-wmv Windows Media video wmv
video/x-wmv Windows Media video wmv
video/x-ms-wvx Windows Media video wmv
video/x-ms-wm Windows Media video wmv
video/x-ms-wmp Windows Media video wmv
application/x-ms-wms Windows Media video wms
application/x-ms-wmp Windows Media video wmp
application/asx Microsoft ASX playlist asx
audio/x-ms-wma Windows Media audio wma
DivX® Web Player
File: libtotem-mully-plugin.so
Version:
DivX Web Player version 1.4.0.233
MIME Type Description Suffixes
video/divx AVI video divx
NPAPI Plugins Wrapper 1.3.0
File: npwrapper.so
Version:
nspluginwrapper is a cross-platform NPAPI plugin viewer, in particular for linux/i386 plugins.
This beta software is available under the terms of the GNU General Public License.
MIME Type Description Suffixes
unknown/mime-type Do not open none
iTunes Application Detector
File: librhythmbox-itms-detection-plugin.so
Version:
This plug-in detects the presence of iTunes when opening iTunes Store URLs in a web page with Firefox.
MIME Type Description Suffixes
application/itunes-plugin