I have a TiBook, 1 GHz G4 with 512 MB of ram, and it's running Panther. I'm going to replace it within the next few months. Someone is selling Tiger in the yard sale forum for $30. Should I get it? I mean, the price is good, but I don't want to make my laptop any slower than it already is, and I am having trouble thinking of a feature in Tiger that I really need on here.