now you have sorted it download this degrag utility
http://www.halsteadk.freeserve.co.uk/pfsdefrag/also diskvalid needs to have the FIX option to repair files.
also it is worth mentioning that cache files from ibrowse , aweb and voyager may mention a error on some cache files it does fix them even though reports again, again and again.
The author of the above program reported this to me.
I would also use pfsdoctor which comes with pfs3, keeps the drive in good condition.
