2 Laptops with Vista
1 Laptop with XP
3 Desktops with XP
All machines talk to each other fine, all share files ok and all can see the printer in question (HP 990cxi).
The printer is directly attached to USB port of the main desktop machine.
Each machine has had the printer added as a network printer and it installed fine
From the remote XP machines I can print (including laptop)
From the 2 vista machines I can see the installed printer and view it's preferences however print jobs don't complete. They go into the queue, "spool" and then disappear, without ever printing.
I'm completely stumped as the printer has installed ok - now jobs just wont complete. Any ideas?