Craig,
AFAIK only the user who placed locks could unlock. I haven't tested it though:( I use a similar method that doesn't need and/or use locks but I think it would work. The second method on your site is nice (wish I have seen it before developing mine:)
Cetin

>I don't like the method recommended by Nigel. If some line does UNLOCK ALL, it fails. Look at the KB article, "Limiting Simultaneous Users", on my web site
>
>>HI!
>>
>>I have a function called users in system:
>>What it currently does is:
>>on the server I have a PROFILES folder
>>PROFILES -
>> USER1
>> foxuser.dbf
>> USER2
>> foxuser.dbf
>>
>>The program checks all user folders and tries to open the foxuser.dbf excl
>>If it fails then the user is assumed to be in the system.
>>
>>This solution usually works but often it shows some users which left the system
>>I think NT holds the files as a part of it's file caching therefor the excl call fails.
>>It seems this way because you also cannot delete the file at this time.
>>
>>Also it sometimes fails to pick up some users (I dopn't know why)
>>
>>What I am looking for is ideas on how to show the users that are in the system...
>>I used to have a login table with a record for each logged in user but when the program crashes
>>this record is not deleted and it appears there are users in the system.
>>
>>What do you people use if anything for this type of function?!?!?