I own a iMac 24" 2,8 ghz and 4 MB ram. After the Leopard installation I've experienced many problems with parallels either with my build 5160 or with the beta 5540 My computer crashes so often that it's impossible to work on it. I tried to uninstall and reinstall parallels many times but nothing change. And after that i had to reinstall completly windows xp on my boot camp partition becouse this didn't work no more too... Now I thinking to format completly my disk and install back Tiger. Do you have any advice? Are you planning to fix all this problems soon? (I notice in the support forum than many people have the same problems like me!) Thank You