Printer not appearing on all clients within an OU when deployed via GPO
I have setup a printer on our 2008 print server and set it to deploy to an OU via GPO. When I set it up it worked a treat and it has been working well for other printers and OU's across our network.
Now one of our rooms (OU) has developed a problem where suddenly the printer isn't showing up on the clients. I've checked the GPO and checked the printer is fine (successfully printed test page from server) but the clients don't seem to install the printer?
I've logged onto multiple clients within the room and forced a gpupdate, some of them then had the printer listed and others didn't???
I logged onto each one as the same user and each client is the same image (only difference is computer name).
When I try to connect to the printer manually on one of the ones where the printer isn't showing I get a 'Windows cannot connect to printer' error message?
Does anyone have any ideas what might be causing this to happen as it's rather confusing?