roaming profiles and printing problems

I have a network of about 100 users that use roaming profiles – Windows 2000 on the server and workstation sides. They change workstations several times a day due to scheduling. I have the default printer set with an active directory computer startup policy. Each user area has a default printer which is assigned to the workstation through the startup policy. Unfortunately if they flip locations and print, several but not all users will experience their print jobs go to the previous location’s printer, even if they have specified the current room printer with the File ->Print command. It may be only one application on the computer that does it, or all of them…it doesn’t really have defined lines. I suspect roaming profiles but why does it shoot itself to the wrong printer?

Any ideas?