Hope this is the right place for this. I did a search but saw nothing the same. I have a iMac G5 Intel Core 2 Duo 2.16 GHz, right now running 10.4.11 I loaded Leopard last month and all of a sudden when I tried to watch a video in U Tube, browser would crash. Didn't matter if it was Firefox, Safari or Netscape. Same happened when I tried to use Amazon or almost anything with videos. So, I re-installed Tiger. When I did that, it asked if I wanted a clean install or partition. Since I wanted to keep everything, I chose the latter. Well, I lost all my addresses and e mails from Entourage. Gone. And, I still have the same crashing issues. I'm not real savvy on the technical stuff. Thanks!