Unicode data randomly replacing real data

D

Doogle

Within a day, one record in each of two totally unrelated database files on
the same client's server had several fields mysteriously replaced by Chinese
characters - which on copy/paste into Word proved (surprise, surprise) to be
Unicode. The length of the unicode strings didn't match the length of the
correct strings. Additionally, a couple of date fields had the date reset to
31 Dec 1899 & 1 Jan 1900 ('day 0' and 'day 1' if memory serves...). All the
fields can be overwritten with the correct data.

Does anyone out there have any idea what could have caused this? Am I
looking at some kind of viral attack, could it be a couple of suspect sectors
on the hard disk, or what? My client and I are totally baffled!
 

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