Talk to any Citrix administrator about printers and before long (s)he'll break out in a cold sweat and start mumbling about drivers, blue screens of death and replication issues. Count yourself lucky if they havn't broken down sobbing "why me, why me" within five minutes.
I've been aware of the HP Universal Drivers for some time, but it's been one of those things thats always been a "I must give that a try one day" and more important things have come along (like those pesky new XenApp versions and OS upgrades...)
So, with my latest implementation, I decided to dedicate some development time to give it a serious try - and the results so far have been very favourable.