Cannot Delete files to the Network through my Windows XP

[Thomas Spyridakis]

My friends,

I have a serious problem. When I try to delete a file (any kind of file, *.doc, *.xls...) from my server I can't. This happens not always, but randomly, and not always on the same files. After 30 seconds I receive a message that inform me that the file is in use. Of course the file are not in use.
My computer have Windows XP SP1 and my server Windows 2000 server. I try many workarounds, but the problem remains.
Is this Windows XP problem?
Does anybody have an idea?

Thank you
Thomas Spyridakis