At one site we have our network printers not showing in the printers list on XP client after they disconnect/reconnect to the network. They are using the Offline Files feature, when they reconnect and perform a successful synchronization they have access to all network files but the printers do not come back. Usually if this happens I can go to Printers and Faxes and hit f5 to refresh and they come back, that does not work this time. Reboot brings them back but only until a disconnect. Our other sites do not do this.
We have 2003 R2 DC with 2003 level domain, XP pro client. Printers are installed using the Print Management feature of 2003 R2 deployed through group policy.