>>I have also done this on another file (with rlock())
>>When i switched the computer off and on again the lock was still there.
>
>Hmmmm... that's obviously not what I expected to happen. I would've thought that the lock would be released when the machine that had it was turned off or crashed.
>
>Any ideas anyone else?!?!?!?!?
>
>Thanks!
>
>Alex

That's usually a setting somewhere within the OS. Sorry, but I don't have any idea just what the setting is or is called on any system, I just know it exists.