Error on loading

[Anpu]

From today, I am getting error while running Regnum, which I ve never seen before.

I start Regnum, pick my character and after that starts loading which results in instant crashing.

Terminal output:

Failed to allocate :
size : 65536 bytes
alignment : 4 bytes
domains : 2
game: ../../radeon/radeon_cs_gem.c:176: cs_gem_write_reloc: Assertion `boi->space_accounted' failed.
Saving backtrace to crash_backtrace_27258.log
Got SIGABRT (aborted)

Crash log says:

./game(_ZN10ClientBase14save_backtraceEv+0x5f) [0x63742f]
./game(_ZN10ClientBase12client_crashEi+0x8) [0x637848]
/lib/libc.so.6(+0x33af0) [0x7f486eea3af0]
/lib/libc.so.6(gsignal+0x35) [0x7f486eea3a75]
/lib/libc.so.6(abort+0x180) [0x7f486eea75c0]
/lib/libc.so.6(__assert_fail+0xf1) [0x7f486ee9c941]
/lib/libdrm_radeon.so.1(+0x20de) [0x7f486d31d0de]
/usr/lib/dri/r200_dri.so(+0x2bac5) [0x7f486d774ac5]
/usr/lib/dri/r200_dri.so(+0x30c65) [0x7f486d779c65]
/usr/lib/dri/r200_dri.so(+0x313b4) [0x7f486d77a3b4]
/usr/lib/dri/r200_dri.so(+0x30581) [0x7f486d779581]
/usr/lib/dri/r200_dri.so(+0xf0e9a) [0x7f486d839e9a]
/usr/lib/dri/r200_dri.so(+0xf1c9d) [0x7f486d83ac9d]
/usr/lib/dri/r200_dri.so(+0xf2036) [0x7f486d83b036]
/usr/lib/dri/r200_dri.so(+0x1c72af) [0x7f486d9102af]
/usr/lib/dri/r200_dri.so(+0x1c7aca) [0x7f486d910aca]
/usr/lib/dri/r200_dri.so(+0xf1da4) [0x7f486d83ada4]
/usr/lib/dri/r200_dri.so(+0xf2036) [0x7f486d83b036]
/usr/lib/dri/r200_dri.so(+0xe93fc) [0x7f486d8323fc]
/usr/lib/dri/r200_dri.so(+0xe956c) [0x7f486d83256c]
./game(_ZN8Engine3D12RenderizerGL24render_indexed_pr imitiveEjjjjjj+0x182) [0xba4742]
./game(_ZN8Engine3D10RendererGL14render_drawsetEPNS_ 14RenderOpParamsER13CSmartPointerINS_8GeometryEERS 3_INS_7DrawSetEE+0x297) [0xc8aae7]
./game(_ZN8Engine3D10RendererGL6renderEPNS_12RenderO pListEPNS_11IRenderPassE+0x22d) [0xc8916d]
./game(_ZN22ClipmapsCustomRenderer6renderEPN8Engine3 D11IRenderPassE+0x734) [0x7b2134]
./game(_ZN8Engine3D12RenderizerGL11render_listERNS_1 7RenderOpListViewsE+0x152b) [0xbb750b]
./game(_ZN3GUI12CameraWidget12render_sceneEv+0x33d) [0x96ed9d]
./game(_ZN3GUI8Drawable6renderEv+0x1c5) [0x91c6c5]
./game(_ZN3GUI6Widget11draw_signalENS_9AreaCoordE+0x 130) [0x955540]
./game(_ZN3GUI6Widget11draw_signalENS_9AreaCoordE+0x 176) [0x955586]

My system:
AMD Sempron 64 2600+
2GB RAM
ATI Radeon 9250
Kubuntu Lucid Lynx
OpenGL vendor string: Tungsten Graphics, Inc.
OpenGL renderer string: Mesa DRI R200 (RV280 5960) 20090101 TCL DRI2
OpenGL version string: 1.3 Mesa 7.9-devel
OpenGL extensions: