I installed Snow Leopard (SL) and had a problem in Parallels that showed up when starting the virtual machine. I downloaded and installed the latest Parallels manually. When I go to do a check for new versions the help files say to look under HELP in Parallels and choose CHECK FOR UPDATES. That option doesn't exist now on my system. I can't find where to have Parallels check for updates. After the update I seem ok as long as the system boots with a 32 bit kernel. However, if I boot SL into a 64 bit kernel, Jeppesen Flitestar suffers a fatal error on startup. Parallels appears to start fine but Flitestar under Win7 RC1 64 bit crashes. Win 7 itself stays up and other apps run ok.