Computer goes offline while still connected
 

Wonder if anyone else has solved this problem. We have a
fresh build of XP on a PIII gateway laptop. I have
designated a couple of folders on the server as offline.
The machine syncs correctly and all files are available
when the computer isn't connected. The problem is when
the user is at the office, the machine will go into
offline mode without reason. The network is solid, I've
replaced the network cable, I've unchecked and rechecked
the offline selection. Any ideas?