since the switch to unity 3D and the GLES driver by default firefox on the pandaboard reders extremely slow

scrolling websites in firefox on a pandaboard got extremely slow in quantal where we ship unity 3D and the GLES driver by default for this architecture. while there seem to be possibilities to speed up firefox with a build against GLES, this would break firefox on all ubuntu arm installs that do not have GLES support by default (99% of them)

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: firefox 15.0+build1-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-209.15-omap4 3.5.2
Uname: Linux 3.5.0-209-omap4 armv7l
AddonCompatCheckDisabled: False
ApportVersion: 2.5.1-0ubuntu4
Architecture: armhf
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: ogra 1567 F.... pulseaudio
 /dev/snd/controlC0: ogra 1567 F.... pulseaudio
BuildID: 20120825191349
Channel: Unavailable
Date: Tue Sep 4 12:08:35 2012
ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha armhf+omap4 (20120903.4)
IpRoute:
 default via 192.168.2.1 dev wlan0 proto static
 169.254.0.0/16 dev wlan0 scope link metric 1000
 192.168.2.0/24 dev wlan0 proto kernel scope link src 192.168.2.108 metric 9
PciNetwork:

Plugins:
 Windows Media Player Plug-in 10 (compatible; Totem) - /usr/lib/mozilla/plugins/libtotem-gmp-plugin.so (totem-mozilla)
 DivX® Web Player - /usr/lib/mozilla/plugins/libtotem-mully-plugin.so (totem-mozilla)
 VLC Multimedia Plugin (compatible Totem 3.4.3) - /usr/lib/mozilla/plugins/libtotem-cone-plugin.so (totem-mozilla)
 QuickTime Plug-in 7.6.6 - /usr/lib/mozilla/plugins/libtotem-narrowspace-plugin.so (totem-mozilla)
 iTunes Application Detector - /usr/lib/mozilla/plugins/librhythmbox-itms-detection-plugin.so (rhythmbox-mozilla)
PrefSources: prefs.js
Prefs:
 browser.places.smartBookmarksVersion: 4 (prefs.js)
 extensions.lastAppVersion: "15.0" (prefs.js)
 network.cookie.prefsMigrated: true (prefs.js)
 places.history.expiration.transient_current_max_pages: 26277 (prefs.js)
 privacy.sanitize.migrateFx3Prefs: true (prefs.js)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=15.0/20120825191349
RelatedPackageVersions:
 totem-mozilla 3.4.3-0ubuntu2
 rhythmbox-mozilla 2.97-1ubuntu4
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)