I am now running version 1970 again (very stable) because 3186 is one buggy release. Why it has been released as a non-beta is beyond me. I am running MacOSX 10.4.8 with 2GB of memory (first Core Duo iMac). Parallels runs Windows XP SP2, no BootCamp partition. Using version 3150, 3170 and 3186 results in BSODs all the time, especially when resizing or dragging windows, but sometimes totally random. The bug seems to be the videocard driver according to Windows. I want to help, but the developers never respond.