My tireless 2004 iBook, 1.33ghz with 1.5 GB ram and 30GB HD, has gotten very tired of late and is running safari extremely slowly. It's to the point where I can't update any of my web pages or blogs as the page refresh and load time sends it into beach ball lasting about 30 sec. each time. It's running OS X 10.4.1. I've updated the software, emptied the cache and cookies, repaired the HD, but nothing seems to be helping. Any further suggestions?