Tim, I have run Tiger on an identical iBook, as well as a 500 G3 iMac with no problems at all. However both had 320mb of RAM. And I have run them both for a long time too. Currently both are OS-X.4.9. Bill -------------- next part -------------- An HTML attachment was scrubbed... URL: http://listserver.themacintoshguy.com/pipermail/ibook/attachments/20070602/ef6abe4d/attachment.html