Server 9 mysterious intermittent file crash

fms9, win 2k, finally got php web access to work, now I get
intermittent corruption of my main database file of 200,000 records.
Once per week i get a 'file closed' status on my database admin
overview and I have to offload it to another machine, open with fm 9
or 8, close and then re upload to the server, works a week, then same
thing...... any help out there?

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