>>>>>I tried when I used VFP9 but still different number of records. Actually the program does not delete records in this table.
>>>>
>>>>Have you verified that it's indeed the same folder and same table? What if the users are mapped differently? Try adding something to that folder and then verify if both users will see that same file.
>>>
>>>I did verify that. When I was connected to one desktop I created a test text file in the folder. Then from the other desktop I could see this file. And there is only one table of this name.
>>
>>The only other thing I can think of is to get rid of all indexes by using DELETE TAGS ALL (for now) and verify after that.
>
>I will try this when I connect next time (I don't have a remote connection, I do it via GoToMeeting). But somehow I think what Tamar said could be the cause. Because I reindexed the tables and still had the problem.

What is the device that's storing the data files - server computer (Windows or Linux?), workstation, NAS, ?

Can you test with real-time antivirus scanning disabled on all machines that are involved?