smb works from iMac, not from G4-400/MP


This puzzles me quite a bit.
When my gf (on a iMac DV-500) enters smb://pece/PECE in the "Connect to server" dialog she is connected to my W98 pc and asked for user-password and then she's in.

When I do the exact same thing on my G4-500/MP i get the usual error 1 dialog "No file services are... bla bla". Whe are on the same local network, with exactly the same setting (different static IP number of course). I even tried to swap our IP numbers, no change.

Whe are both running 10.1 with the security update. Is it a problem with the dual processors , or is it just a girl thing? :)