xorg swaps some gigabytes and so system is not very responsive

Right after opening the hotkey settings of vlc, Xorg started to assign memory as crazy. I killed X and tried it again. And Xorg leaked memory again as mad.

ubuntu-bug was launched via ssh while Xorg drove crazy.

# ps -e -orss=,args= | sort -b -k1,1n | pr -TW$COLUMNS | grep X
1486156 /usr/bin/X :0 -core -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch -background none

# free -m
             total used free shared buffers cached
Mem: 2007 1869 138 0 1 145
-/+ buffers/cache: 1722 285
Swap: 1999 1529 470

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: xorg 1:7.7+1ubuntu3
ProcVersionSignature: Ubuntu 3.5.0-13.14-generic 3.5.3
Uname: Linux 3.5.0-13-generic i686
ApportVersion: 2.5.1-0ubuntu4
Architecture: i386
Date: Sat Sep 8 00:14:13 2012
DistUpgraded: Fresh install
DistroCodename: quantal
DistroVariant: ubuntu
DkmsStatus: virtualbox, 4.1.18, 3.5.0-13-generic, i686: installed
GraphicsCard:
 Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) [8086:2a02] (rev 03) (prog-if 00 [VGA controller])
   Subsystem: QUANTA Computer Inc Device [152d:0763]
   Subsystem: QUANTA Computer Inc Device [152d:0763]
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha i386 (20120724.2)
MachineType: Intel Corporation Crestline+ICH8M
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-13-generic root=UUID=3762be01-51dd-41e0-89fe-497173b4e1a9 ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/23/2008
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: Q3D18
dmi.board.name: Crestline+ICH8M
dmi.board.vendor: Intel Corporation
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 1
dmi.chassis.vendor: Intel Corporation
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrQ3D18:bd09/23/2008:svnIntelCorporation:pnCrestline+ICH8M:pvrlicable:rvnIntelCorporation:rnCrestline+ICH8M:rvrNotApplicable:cvnIntelCorporation:ct1:cvrN/A:
dmi.product.name: Crestline+ICH8M
dmi.product.version: licable
dmi.sys.vendor: Intel Corporation
version.compiz: compiz 1:0.9.8.0-0ubuntu1
version.libdrm2: libdrm2 2.4.38-0ubuntu2
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0~git20120821.c1114c61-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0~git20120821.c1114c61-0ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.12.99.905-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120713.6ef1ad6a-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.3-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.1-4~ubuntu1