No, I stopped before turning to Scandisk because I fear it's going to resolve the problem erasing the corrupted data. The Fat is severy wounded, since it reports wrong files size and some files have names whith random characters and some files actually point to the wrong data (e.g. you open a "file.doc" and you discover is an xls file).
Partition magic refuse to operated and just report the fat corruption. I found recover 98 which seems great, but the trial version just let you check what is recoverable but doesn't allow to recover anything.
That's all.
Thanks
Antonio