I was going to just report this as a bug, when I found out that it happens on only one of my two alpha4 partitions: ShowImage takes a segment violation on mouse cursor over an icon button, when BIconButton::DrawBorder tries to call be_control_look->DrawButtonFrame. BIconButton::DrawBorder is the last function on the traceback. The parameters look OK, and be_control_look is non-null (DrawBorder doesn't check) and seems to work for be_control_flags->Flags(). If we skip that DrawButtonFrame call, it crashes on the next one, when BIconButton::DrawBackground calls be_control_look->DrawButtonBackground. So be_control_look seems to be trouble, but ... This happens (every time) on the partition I use, but the partition with more of a clean install is fine. Both were installed from the same CD, over existing older Haiku. Most everything else seems to be OK, though (on either partition) shutdown always finds input_server unresponsive, if that's any clue. So ... I don't know, any ideas about where to look for the cause of something like this? Donn