I've been having problems launching Parallels for weeks, have started a support ticket (mar 29) but to no avail. Despite sending logs and crash logs, nobody seems to have an iota of a clue as to what is happening. All I get as replies (from tech support) try to uninstall this, reinstall that, perhaps this or that. The last message was to reinstall my OS. I shouldn't have to wait for weeks to get a company to solve a problem with their crashing software. I started having problems when i cloned (with super duper) a smaller hard drive to a larger one to make a switch in my Macbook Pro. Everything else worked perfectly except for Parallels crashing on 1st attempt (it would start if i clicked on "relaunch"). This was in tiger os 10.4.latestversion. Regardless of the installs, uninstalls, reinstalls, it still stalls! Now I've tried again to upgrade to Leopard (the 1st time didn't work either for parallels) and now it won't start up at all. I've been wasting my time -- hours and hours-- installing and reinstalling and parallels stills screws up. If I'm writing here it's because i'm tired of the lame attempts by Parallels tech support to solve my problem. Up till now I've been whole heartedly recommending Parallels to all my friends...but if I don't get this problem solved *immediately* I'll just have to tell them that this software is just too unreliable to buy. Regards Jean PS: Should someone from Parallels wish to contact me, I'd love to talk to you.