When you report a bug, either here or on SourceForge, can you please post these relevant system specs. It will cut down on discussion if I don't have to ask each time:
operating system and version
video card and driver version
Aleph One version and scenarios tried
renderer(s) used (software, OpenGL (Classic), OpenGL (Shader) )
If you get a crash report, either pastebin it or upload it directly.