I know you asked for people who had experienced issues, but I thought I'd say that OpenGL model has been fine for me on both my real PC and my VMware image for quite a while. Both exhibited [different] problems in DirectX mode.
BTW, thanks for fixing CTRL+TAB in Find/Replace panels!
Minor issue in 20091127 (I haven't checked if it exists in any other release):
When a quick panel is visible, you can still bring up Find/Replace and, if you close Find/Replace, the quick panel remains open but focus is on the main editor window.