Since I didn't want to download from the various available torrents - I kept searching and found this: http://download.parallels.com/v3/en/GA/Parallels-Desktop-5584-Mac-en.dmg It seems to work. Would be nice if Parallels download offered a link to "Previous builds" as the URLs for the older builds seem to follow no logical pattern. And since almost every build causes some users to downgrade - why put paying customers through the hassle of trying to find something that used to work.
