windows don't refresh, sometimes tearing happens

[Miles Colman]

windows don't update until mouse click, or pressing reutrn, or until some time passes. for instance, this browser windows isn't updating. also, thepopup spell check is broken

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: xorg 1:7.6+7ubuntu7
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 280.13 Wed Jul 27 16:53:56 PDT 2011
 GCC version: gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)
.tmp.unity.support.test.0:

ApportVersion: 1.23-0ubuntu3
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,mousepoll,vpswitch,snap,move,imgpng,grid,regex,resize,wall,place,gnomecompat,session,unitymtgrabhandles,animation,fade,expo,workarounds,scale,ezoom,unityshell]
CompositorRunning: compiz
Date: Tue Oct 11 00:35:50 2011
DistUpgraded: Fresh install
DistroCodename: oneiric
DistroVariant: ubuntu
DkmsStatus: nvidia-current, 280.13, 3.0.0-12-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard: nVidia Corporation GF108 [GeForce GT 430] [10de:0de1] (rev a1) (prog-if 00 [VGA controller])
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20111009)
JockeyStatus:
 xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, In use)
 xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
MachineType: Dell Inc. OptiPlex 960
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=07933e2a-f92f-4f43-9da5-4692ed9f4903 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
XorgConf:
 Section "Device"
  Identifier "Default Device"
  Option "NoLogo" "True"
 EndSection
dmi.bios.date: 01/21/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A11
dmi.board.name: 0F428D
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA11:bd01/21/2011:svnDellInc.:pnOptiPlex960:pvr:rvnDellInc.:rn0F428D:rvrA00:cvnDellInc.:ct3:cvr:
dmi.product.name: OptiPlex 960
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu3
version.ia32-libs: ia32-libs N/A
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
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
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1