**System Information**
openSUSE 12.3 64bits
NVIDIA 480GTX SC
**Blender Version**
Broken: Blender 2.69.7 07ebe89
**Short description of error**
Crash after undo
**Exact steps for others to reproduce the error**
Set {F56492} to viewport rendering mode
Set file to viewport material mode
Move a few of the objects around
Ctrl+Z a few times
See multiple errors in terminal "GPUTexture: negative refcount"
Most of the times it will segfault after a few undos