Flash-player is showing inverted (or corrupted) videos.

After an upgrade flash-player started to show corrupted videos, as shown in the attached screenshot. Pictures and texts are not corrupten in flash-material.

Hardware acceleration is on according to debug information. It might be the source of the problem, but I have not been able to deactivate it yet.

The video in the screenshot is found here, but the problem affects all videos shown thought flash-player.
http://www.youtube.com/watch?v=GaDFdtk0A2Y

Troubleshooting information from the flash-player:
nsiabbl=32678&nsivbbl=282871&cfps=24%2E916943521594686&w=854&sd=B4A7DA321HH1333446270934839&debug%5FvideoId=GaDFdtk0A2Y&cr=SE&plid=AAS8wycvJFypsO8S&debug%5FplaybackQuality=medium&stageFps=10&hl=sv%5FSE&debug%5FsourceData=B4A7DA321HH1333446270934839&debug%5FflashVersion=LNX%2011%2C2%2C202%2C228&lact=296665&debug%5Fdate=Tue%20Apr%203%2011%3A52%3A23%20GMT%2B0200%202012&h=481&fexp=914074%2C912211&sdetail=f%253Aplayer%5Fembedded%252Cp%253Aforum%2Eturbop&md=1&decoding=software&videoFps=25&csipt=watch5ad&fmt=34&rendering=accelerated&volume=100&referrer=http%253A%252F%252Fforum%2Eturboperformanceclub%2Ecom%252Fviewtopic%2Ephp%253Ff%253D23%2526t%253D229359%2526start%253D225&screenw=3840&hasstoryboard=1&screenh=1080&feature=player%5Fembedded&vq=auto&sourceid=r&droppedFrames=23&nsidf=23&playerh=480&ahoffset=30&scoville=1&playerw=854&pd=0%2E16399999999999992&vid=fIrXtRvc9%5Fota5NxUHw7jbv6EoBydNZSC&sendtmp=1&mos=0&el=detailpage&erc=1&fs=1

Adobe flash version: 11.2.202.228
Webbrowser user agent: Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:11.0) Gecko/20100101 Firefox/11.0
Video driver: 3.3.0 NVIDIA 280.13
WebGL-render (if it is relevant?): NVIDIA Corporation -- GeForce 9800 GTX/9800 GTX+/PCI/SSE2 -- 3.3.0 NVIDIA 280.13

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: xorg 1:7.6+7ubuntu7.1
ProcVersionSignature: Ubuntu 3.0.0-17.30-generic-pae 3.0.22
Uname: Linux 3.0.0-17-generic-pae i686
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Är en katalog: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86 Kernel Module 280.13 Wed Jul 27 16:55:43 PDT 2011
 GCC version: gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)
.tmp.unity.support.test.0:

ApportVersion: 1.23-0ubuntu4
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,grid,mousepoll,vpswitch,wall,place,regex,snap,imgpng,gnomecompat,animation,move,resize,expo,fade,session,workarounds,unitymtgrabhandles,scale,ezoom,unityshell]
CompositorRunning: compiz
Date: Tue Apr 3 12:15:15 2012
DistUpgraded: Fresh install
DistroCodename: oneiric
DistroVariant: ubuntu
DpkgLog:

GraphicsCard:
 nVidia Corporation G92 [GeForce 9800 GTX] [10de:0612] (rev a2) (prog-if 00 [VGA controller])
   Subsystem: nVidia Corporation Device [10de:0577]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
JockeyStatus:
 xorg:nvidia_173 - Accelererad grafikdrivrutin för NVIDIA (Proprietär, Inaktiverad, Används inte)
 xorg:nvidia_173_updates - NVIDIAs accelererade grafikdrivrutin (uppdateringar efter utgåva) (Proprietär, Inaktiverad, Används inte)
 xorg:nvidia_current - Accelererad grafikdrivrutin för NVIDIA (Proprietär, Aktiverad, Används)
 xorg:nvidia_current_updates - NVIDIAs accelererade grafikdrivrutin (uppdateringar efter utgåva) (Proprietär, Inaktiverad, Används inte)
MachineType: Gigabyte Technology Co., Ltd. P35-DS3
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-17-generic-pae root=UUID=7f3caf84-7ae3-4217-9149-1087933c9dff ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/27/2008
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F13i
dmi.board.name: P35-DS3
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF13i:bd03/27/2008:svnGigabyteTechnologyCo.,Ltd.:pnP35-DS3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP35-DS3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: P35-DS3
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu6.1
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1