I have a 1.33 GHz PowerBoook G4 15" Titanium, 256 MB, currently operating Mac OS 10.3.9. Have been annnoyed with its performance for months now and have had enough (new machine not an option). Runs/responds slow, safari crashes occasionally while loading web pages (asks if I would like to report a bug), cannot use my hotmail account since they update the page. Would like to upgrade to 10.5 (unless 10.4 is recommended) and add additional memory. What else would be recommended to get it back to running the way it should (or hopefully better)? Appreciate any advice