>>OK we have proved it is injection from an external source.
>>SMB = Server message Block, it appears to be a Networking problem.
>>Search the MSKB articles for SMB http://support.microsoft.com

Did that straight after leaving message, found article detailing SMB issue with Windows 200 Server, got their hardware people to upgrade to SP4.


>>Check this link out http://support.microsoft.com/default.aspx?scid=kb;en->>us;810907
Did not find that one, I'll see if it applies.

>>Try increasing the size of the alpha field to say 50 Chars and see if it >>captures all the corruption.
Did that too! great minds think alike, also copied / deleted / renamed so that files not on same area of physical disk.

Nothing to report in last 36 hours, fingers crossed!

Thanks again,

Gary.