The most common cause of this is the header of the file getting corrupted. Doug Hennig has a fix for this in the Stonefield Data Toolkit; and there are other products, FoxFix eg, which fix this.

Hank

>My VFP5.0a multi-user EXE has a few tables which include an FPT file. After several users reported getting Page Faults, I discovered corrupted data (little squares) in one or more of the FPT files. In all cases, the trashed memo field contains data that should have been in another record's FPT field.
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>Anyone ideas on what might be causing this?