Just yesterday, Safari 3.1 latest version on this PowerPC wiped ALL of its cookies in ~Library/Cookies/Cookies.plist
I thought about reporting it to Apple but I remember Rosyna from Unsanity, as an advanced developer already documented the full issue there:
http://www.unsanity.org/archives/app...bug_filers.php
I think it should have option to Import Safari cookies and nothing else.
It is a Intel Apple bug recently made its way into PPC, very sad.