Comment 8 for bug 289925

just in case you need something to look forward to: this bug still persists in Jaunty.
I am using the Radeon driver. This did not occur with fglrx on intrepid.

here is my backtrace:
#0 0xb7c1f196 in glGetError () from /usr/lib/libGL.so.1
#1 0xb7d21057 in ffi_call_SYSV ()
   from /usr/lib/python2.5/lib-dynload/_ctypes.so
#2 0xb7d20e96 in ffi_call () from /usr/lib/python2.5/lib-dynload/_ctypes.so
#3 0xb7d1be24 in _CallProc () from /usr/lib/python2.5/lib-dynload/_ctypes.so
#4 0xb7d14fc9 in ?? () from /usr/lib/python2.5/lib-dynload/_ctypes.so
#5 0x0805d897 in PyObject_Call ()
#6 0x080ccd3d in PyEval_EvalFrameEx ()
#7 0x080cfe95 in PyEval_EvalCodeEx ()
#8 0x081174f1 in ?? ()
#9 0x0805d897 in PyObject_Call ()
#10 0x08063aaa in ?? ()
#11 0x08062676 in PyObject_CallFunctionObjArgs ()
#12 0xb7d15003 in ?? () from /usr/lib/python2.5/lib-dynload/_ctypes.so
#13 0x0805d897 in PyObject_Call ()
#14 0x080ccd3d in PyEval_EvalFrameEx ()
#15 0x080cfe95 in PyEval_EvalCodeEx ()
#16 0x080d00a7 in PyEval_EvalCode ()
#17 0x080edadf in PyRun_FileExFlags ()
#18 0x080eddaa in PyRun_SimpleFileExFlags ()
#19 0x08059617 in Py_Main ()
#20 0x08058992 in main ()

this goes down to libGL, so seems Mesa is at fault. But luckily the workaround proposed by Robert Gibbs works.