X-server hangs while starting some GTK programs

X-server hangs while starting some GTK programs
Bug only happens with proprietary nvidia drivers. With nouveau all works fine
In logs I pay attention on those strings:

1) Xorg.log:
[ 11641.538] (EE) NVIDIA(0): Failed to allocate 2D engine
[ 11641.587] (EE) NVIDIA(0): *** Aborting ***
[ 11641.603] (EE) NVIDIA(0): Failed to allocate 2D objects
[ 11641.603] (EE) NVIDIA(0): *** Aborting ***
[ 11641.603] (EE) NVIDIA(0): Error recovery failed.
[ 11641.603] (EE) NVIDIA(0): *** Aborting ***
[ 11644.519] (WW) SynPS/2 Synaptics TouchPad: Ignoring new tracking ID for existing touch.
[ 11649.558] [mi] EQ overflowing. The server is probably stuck in an infinite loop.
[ 11649.558]
Backtrace:
[ 11649.626] 0: /usr/bin/X (xorg_backtrace+0x3b) [0x80a531b]
[ 11649.626] 1: /usr/bin/X (mieqEnqueue+0x1ab) [0x809f2ab]
[ 11649.626] 2: /usr/bin/X (xf86PostMotionEventM+0xbf) [0x80c58ef]
[ 11649.638] 3: /usr/lib/xorg/modules/input/evdev_drv.so (0xb4d29000+0x368f) [0xb4d2c68f]
[ 11649.638] 4: /usr/lib/xorg/modules/input/evdev_drv.so (0xb4d29000+0x5099) [0xb4d2e099]
[ 11649.638] 5: /usr/lib/xorg/modules/input/evdev_drv.so (0xb4d29000+0x5d0d) [0xb4d2ed0d]
[ 11649.638] 6: /usr/bin/X (0x8048000+0x6c14f) [0x80b414f]
[ 11649.638] 7: /usr/bin/X (0x8048000+0x12df66) [0x8175f66]
[ 11649.638] 8: (vdso) (__kernel_sigreturn+0x0) [0xb7790400]
[ 11721.339] (EE) NVIDIA(0): Failed to allocate 2D engine
[ 11721.543] (EE) NVIDIA(0): *** Aborting ***
[ 11721.543] (EE) NVIDIA(0): Failed to allocate 2D objects
[ 11721.543] (EE) NVIDIA(0): *** Aborting ***
[ 11721.543] (EE) NVIDIA(0): Error recovery failed.
[ 11721.543] (EE) NVIDIA(0): *** Aborting ***

2) Syslog:
Apr 13 00:32:18 timekiller kernel: [11561.245278] NVRM: Xid (0000:01:00): 13, 0001 00000000 00005097 000015e0 00000000 00000100

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: nvidia-current 270.41.03-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Это каталог: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86 Kernel Module 270.41.03 Sat Apr 9 00:04:57 PDT 2011
 GCC version: gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu3)
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: kwin
Date: Fri Apr 15 12:16:56 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: kubuntu
DkmsStatus:
 nvidia-current, 270.41.03, 2.6.38-8-generic-pae, i686: installed
 virtualbox-ose, 4.0.4, 2.6.38-8-generic-pae, i686: installed
GraphicsCard:
 nVidia Corporation G98M [GeForce G 105M] [10de:06ec] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] Device [1025:0253]
InstallationMedia: Kubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110301.4)
JockeyStatus:
 ERROR:root:Could not find any typelib for AppIndicator
 xorg:nvidia_current - Драйвер ускоренной графики NVIDIA (Проприетарные, Активирован, Используется)
MachineType: Acer Extensa 5635G
ProcEnviron:
 LANGUAGE=ru_RU
 PATH=(custom, user)
 LANG=ru_RU.UTF-8
 LC_MESSAGES=ru_RU.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic-pae root=UUID=03d03616-bdba-43e2-9858-072fda764c7c ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: nvidia-graphics-drivers
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/21/2009
dmi.bios.vendor: Phoenix
dmi.bios.version: V1.3311
dmi.board.name: BA50-MV
dmi.board.vendor: Acer
dmi.board.version: Not Applicable
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenix:bvrV1.3311:bd12/21/2009:svnAcer:pnExtensa5635G:pvrNotApplicable:rvnAcer:rnBA50-MV:rvrNotApplicable:cvnAcer:ct10:cvrN/A:
dmi.product.name: Extensa 5635G
dmi.product.version: Not Applicable
dmi.sys.vendor: Acer
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.24+git20110404.be8802a9-0ubuntu0sarvatt
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11.0+git20110414.78e90bf2-0ubuntu0sarvatt
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental 7.11.0+git20110414.78e90bf2-0ubuntu0sarvatt
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11.0+git20110414.78e90bf2-0ubuntu0sarvatt
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99+git20110405.cc7d1fa3-0ubuntu0sarvatt
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.0+git20110414.030aa3d1-0ubuntu0sarvatt
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110323.8378443b-0ubuntu0sarvatt