Hi,
Let me know whether it solves the problem.

>>>Check the char field occasionaly, you will see the control characters.
>
>>>FWIW the exact cause of the corruption at either end of the file is >>unknown, possibly Network, software or hardware errors, all this method >>dose is keep the system running without grinding to a halt.
>
>>>The cache problem is a totally different problem with other resolutions >>i.e. disable write caching & oplocking, which I will list below.
>
>Thanks Neil!
>
>
>Gary