Thanks for your replies!
Disk Salv couldn't fix the partition, tried all the options I think (salvage, repair, validate etc.) So.. IBrowse has its OWN partition now.
Umm, so would it be better/faster to just put the cache directory there, and have the rest of IBrowse in the same partition as MUI/Miami? I don't mind risking losing URL's if it happens again.. thanx