We've done some PC and printer refreshes and noticed that the first time logging into a system sometimes the Printer element correctly attaches the printer but the HP Universal Print Driver will halt the login process until a user clicks through the UAC prompt and then has an IT administrator enter administrative credentials for the driver to install.
This only happens one time on a brand new PC just to get the driver installed. I guess the workaround would be that an IT admin install these drivers before issuing the PC to the end users. But is this something people just deal with, or is it an HP thing?