Slow video performance since upgrade to Maverick

Binary package hint: xorg

Since I've upgraded to Maverick, the video performance has been horrible. Most noticeably, scrolling in xchat-gnome is so terrible that it takes about 2 seconds to refresh the screen after a PgUp/PgDown.

It could be anything from the new Xorg to the NVidia driver, to GTK, so reporting against Xorg for a start.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: xorg 1:7.5+6ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-19.28-generic 2.6.35.3
Uname: Linux 2.6.35-19-generic x86_64
NonfreeKernelModules: nvidia wl
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 256.52 Wed Aug 25 14:13:02 PDT 2010
 GCC version: gcc version 4.4.5 20100824 (prerelease) (Ubuntu/Linaro 4.4.4-9ubuntu2)
Architecture: amd64
Date: Fri Sep 3 11:46:31 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
MachineType: Apple Inc. MacBookPro5,5
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-19-generic root=UUID=296cf8e0-5328-43a8-a7d6-f96cb65444a9 ro quiet splash nomodeset elevator=deadline video=uvesafb:mode_option=1280x800-24,mtrr=3,scroll=ywrap
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: xorg
dmi.bios.date: 06/15/09
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP55.88Z.00AC.B03.0906151708
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-F2268AC8
dmi.board.vendor: Apple Inc.
dmi.chassis.asset.tag: Asset Tag#
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F2268AC8
dmi.modalias: dmi:bvnAppleInc.:bvrMBP55.88Z.00AC.B03.0906151708:bd06/15/09:svnAppleInc.:pnMacBookPro5,5:pvr1.0:rvnAppleInc.:rnMac-F2268AC8:rvr:cvnAppleInc.:ct10:cvrMac-F2268AC8:
dmi.product.name: MacBookPro5,5
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
system:
 distro: Ubuntu
 codename: maverick
 architecture: x86_64
 kernel: 2.6.35-19-generic