The novel server is deletely randomly my files. It isn't completely random but more or less random.

ex: using VFP I do a re-indexing of all my database files. During this process about 8 (out of 200) get deleted. At least 6 are always the same files that get deleted, the other 2 are random.

On the hard disk there is plenty of space (only half is used , the disk must be about 64 giga.

This isn't the only problem but it is the major one. A more minor problem is files getting corrupted.