Memory leak after latest set of updates (likely to xorg-server)

Binary package hint: xorg

Initially (after I installed Lucid) my memory usage was very high (1.1GB on login to GNOME without any apps open). I am using fglrx, but am not using Compiz. The memory usage remained constant for the most part though. I was concerned with the size of the used memory and couldn't figure out what is using it. After the latest set of updates (a couple of days ago) memory usage dropped to pre-Lucid levels (about 400MB on login). But now I've noticed that memory usage keeps going up and up ever so slightly. In about 2 days of moderate use system is using about 400MB of RAM more than at the beginning. Since I've heard that there are problems with memory leaks in xorg with ATI driver I am assuming this is related but I don't really know for sure.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xorg 1:7.5+5ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-22.36-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
Date: Fri Jun 18 09:06:26 2010
DkmsStatus:
 vboxnetflt, 3.2.4, 2.6.32-22-generic, x86_64: installed
 vboxdrv, 3.2.4, 2.6.32-22-generic, x86_64: installed
 vboxnetadp, 3.2.4, 2.6.32-22-generic, x86_64: installed
 fglrx, 8.723.1, 2.6.32-22-generic, x86_64: installed
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100406.1)
MachineType: Gigabyte Technology Co., Ltd. GA-MA78GPM-DS2H
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=89c1584e-1dc2-44e5-a96f-a7f3587231c1 ro quiet splash
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
dmi.bios.date: 06/03/2008
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F1
dmi.board.name: GA-MA78GPM-DS2H
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.:bvrF1:bd06/03/2008:svnGigabyteTechnologyCo.,Ltd.:pnGA-MA78GPM-DS2H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-MA78GPM-DS2H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-MA78GPM-DS2H
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
system:
 distro: Ubuntu
 codename: lucid
 architecture: x86_64
 kernel: 2.6.32-22-generic