Double workstations in network?

Hey all

Just something I noticed in Vista. On a vista laptop, if I double click on network to view the computers, the XP machines in the network are duplicated.

My machine is the only other Vista machine to this laptop. And mine isnt duplicated.

Any suggesions?

Thanks.

Seems when installing updated network card drivers it fixed the job :)

It's probably picking them up via the regular netbios and once more with UPnP.