Ive recently transferred all the printers from a reliable NW65 sp7 system where I had no problems at all to a new OES2 SP2 server and since then am having no end of trouble?

My main issue at the moment is some printers will only print say 4 pages of a 6 page document, but if I print using the same print driver using pure IP it prints absolutely fine?
It tells the client it printed OK but simply doesn't bother with a couple of the pages!!!!

Any ideas what can cause this? I set the printers up using RAW port 9100 as they are mostly HP printers and I never usually have an issue with them.