(Karmic 64bit) Consistant crash against libc6

[onemyndseye]

libc6 version: 2.10.1-0ubuntu15
Kernel: 2.6.31.5-linux-phc+onemyndseye (Realtime + linux-phc)
Video: GeForce 8600M GT/PCI/SSE2 (Driver NVIDIA 190.42)
Xorg version: 7.4+3ubuntu7

Crash logs:

libs/libcore_client.so(_ZN10ClientBase14save_backtraceEv+0x64) [0x7fc9405805a4]
libs/libcore_client.so(_ZN10ClientBase12client_crashEi+0x8) [0x7fc940580a48]
/lib/libc.so.6 [0x7fc93ca20530]
/lib/libc.so.6 [0x7fc93ca62d01]
/lib/libc.so.6 [0x7fc93ca64a20]
libs/libgui.so [0x7fc93fb0844f]
libs/libgui.so(_ZN3GUI8RichText16get_string_widthERKSsRKNS_12FontInstanceEb+0x79) [0x7fc93fb08589]
libs/libgui_extension.so(_ZN3GUI12TextRenderer17draw_gui_richtextEPN8Engine3D4MeshEfffSsR10RGBA_ColorhNS_12FontInstanceEfbbi+0x353) [0x7fc93f87b473]
libs/libgui_extension.so(_ZN3GUI16Drawable_GUIMesh11draw_stringEiiRKSsRK10RGBA_ColorNS_12FontInstanceEbb+0x1d0) [0x7fc93f880980]
libs/libgui.so(_ZN3GUI9WrapLabel13draw_internalEv+0x613) [0x7fc93fa3acc3]
libs/libgui.so(_ZN3GUI6Widget11draw_signalENS_9AreaCoordE+0x1b4) [0x7fc93fa475d4]
libs/libgui.so(_ZN3GUI6Widget11draw_signalENS_9AreaCoordE+0x170) [0x7fc93fa47590]
libs/libgui.so(_ZN3GUI6Widget11draw_signalENS_9AreaCoordE+0x170) [0x7fc93fa47590]
libs/libgui.so(_ZN3GUI6Widget11draw_signalENS_9AreaCoordE+0x170) [0x7fc93fa47590]
libs/libgui.so(_ZN3GUI6Widget11draw_signalENS_9AreaCoordE+0x170) [0x7fc93fa47590]
libs/libgui.so(_ZN3GUI6Widget11draw_signalENS_9AreaCoordE+0x170) [0x7fc93fa47590]
libs/libgui.so(_ZN3GUI6Widget11draw_signalENS_9AreaCoordE+0x170) [0x7fc93fa47590]
libs/libgui.so(_ZN3GUI6Widget11draw_signalEv+0x87) [0x7fc93fa478d7]
libs/libcommon_entities.so(_ZN13DisplayEntity15show_next_frameEv+0x46) [0x7fc93fdd6d96]
libs/libregnum_client.so(_ZN10GameClient7iterateEv+0x40) [0x7fc940c9b570]
libs/libcore_client.so(_ZN8MainLoop7iterateEv+0xd) [0x7fc940592cbd]
./game(main+0x28e) [0x40127e]
/lib/libc.so.6(__libc_start_main+0xfd) [0x7fc93ca0babd]
./game(__gxx_personality_v0+0x62) [0x400efa]

libs/libcore_client.so(_ZN10ClientBase14save_backtraceEv+0x64) [0x7fb0a215c5a4]
libs/libcore_client.so(_ZN10ClientBase12client_crashEi+0x8) [0x7fb0a215ca48]
/lib/libc.so.6 [0x7fb09e5fc530]
/lib/libc.so.6 [0x7fb09e63ed01]
/lib/libc.so.6 [0x7fb09e640a20]
libs/libos.so(_ZN7Network11NetworkCore14update_buffersEPNS0_13NetworkThreadE+0x412) [0x7fb09fdba6c2]
libs/libos.so(_ZN7Network11NetworkCore15internal_threadEPNS0_13NetworkThreadEb+0x13f) [0x7fb09fdba90f]
libs/libos.so(_ZN13ThreadedClass11thread_procEv+0xd3) [0x7fb09fdca903]
/lib/libpthread.so.0 [0x7fb09cf9ca04]
/lib/libc.so.6(clone+0x6d) [0x7fb09e6a87bd]

libs/libcore_client.so(_ZN10ClientBase14save_backtraceEv+0x64) [0x7fbf3c3095a4]
libs/libcore_client.so(_ZN10ClientBase12client_crashEi+0x8) [0x7fbf3c309a48]
/lib/libc.so.6 [0x7fbf387a9530]
/lib/libc.so.6 [0x7fbf387ebd01]
/lib/libc.so.6 [0x7fbf387eda20]
libs/libgui_extension.so(_ZN3GUI12TextRenderer14draw_gui_labelEPN8Engine3D4MeshEfffSs10RGBA_ColorhNS_12FontInstanceEfbb+0x181f) [0x7fbf3b603d4f]
libs/libgui_extension.so(_ZN3GUI12TextRenderer17draw_gui_richtextEPN8Engine3D4MeshEfffSsR10RGBA_ColorhNS_12FontInstanceEfbbi+0x328) [0x7fbf3b604448]
libs/libgui_extension.so(_ZN3GUI16Drawable_GUIMesh11draw_stringEiiRKSsRK10RGBA_ColorNS_12FontInstanceEbb+0x1d0) [0x7fbf3b609980]
libs/libgui.so(_ZN3GUI9WrapLabel13draw_internalEv+0x613) [0x7fbf3b7c3cc3]
libs/libgui.so(_ZN3GUI6Widget11draw_signalENS_9AreaCoordE+0x1b4) [0x7fbf3b7d05d4]
libs/libgui.so(_ZN3GUI6Widget11draw_signalENS_9AreaCoordE+0x170) [0x7fbf3b7d0590]
libs/libgui.so(_ZN3GUI6Widget11draw_signalENS_9AreaCoordE+0x170) [0x7fbf3b7d0590]
libs/libgui.so(_ZN3GUI6Widget11draw_signalENS_9AreaCoordE+0x170) [0x7fbf3b7d0590]
libs/libgui.so(_ZN3GUI6Widget11draw_signalENS_9AreaCoordE+0x170) [0x7fbf3b7d0590]
libs/libgui.so(_ZN3GUI6Widget11draw_signalENS_9AreaCoordE+0x170) [0x7fbf3b7d0590]
libs/libgui.so(_ZN3GUI6Widget11draw_signalENS_9AreaCoordE+0x170) [0x7fbf3b7d0590]
libs/libgui.so(_ZN3GUI6Widget11draw_signalEv+0x87) [0x7fbf3b7d08d7]
libs/libcommon_entities.so(_ZN13DisplayEntity15show_next_frameEv+0x46) [0x7fbf3bb5fd96]
libs/libregnum_client.so(_ZN10GameClient7iterateEv+0x40) [0x7fbf3ca24570]
libs/libcore_client.so(_ZN8MainLoop7iterateEv+0xd) [0x7fbf3c31bcbd]
./game(main+0x28e) [0x40127e]
/lib/libc.so.6(__libc_start_main+0xfd) [0x7fbf38794abd]
./game(__gxx_personality_v0+0x62) [0x400efa]

[onemyndseye]

*** glibc detected *** ./game: free(): invalid pointer: 0x0000000003680cb0 ***