>>Basicly, you'll have to scan whole table and look for unusual characters in the fields.
>
>Heavy stuff.
>
>When in your experience does the shifting of bytes corruption happen?
>
>During usage or after a dbf is closed but is not properly written by the machines/net cards?

AFAICR, we never exoerienced such corruption. In a few cases when table got corrupted, its contents was partialy overwritten by binary zeros. Most of those cases could be tracked back to the network or hardware problems.