I use Safari too on a Mac powerbook G4 (OS X, "OS Tiger") and never had problems. I can even use Google Docs now on safari, which is exciting because I couldn't awhile ago. It was annoying switching back and forth between safari & netscape, because I'm just so acclimated to safari now. It's all I want to use ever.
Chewsteraghi on Tumblr. Schmichaelira on Twitter. Tumblr aka obsessivechewsteraghidisorder. Be warned: I'm weird.