I've had terrible problems with Safari crashing. I like having lots of tabs open 10-15, and I watch(ed) Safari slow to a crawl with spinning beachballs. After erasing and reinstalling on both my laptops, I haven't had those problems. I had reset Safari numerous times and done some Google searches, followed advice in magazine articles, deleting .plists, etc.. I even tried to give up Safari altogether, though I'm back to using both it and Firefox now.
Of course, I've had some problems with Firefox, too. But version 3 has been quite good.
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