Ok let me start by telling you about how things are setup.....
Domain network Server 2008
Client computers Windows 7
Both R1 and R2 are on static IP
Printer is shared and connected to R2 computer via USB
The issue I had was yesterday R1 client computer could not connect to the R2 printer, message regards permissions.
Logged in as admin and still message re permissions
Now this has been working fine all week.
R1 could still browse to the server (\\server) and any other computers on the domain BUT not R2
The Server or any other computer could also browse to R2 and the printers would work fine but not from R1.
Restarted R1 and still no joy, restarted again and works just fine!!!! it can browse to R2 and the printer works.
Same happened again this morning, restarted couple of times and now working.