I think that someone's previous comment that hp software is "intrusive" is something of an understatement - it is HUGELY and GROSSLY Intrusive! And extremely difficult to get rid of - I had to get some removal software from hp themselves: hp 1315 scrubber (gr_uninst.exe and HpAioScrubber-v2038.exe) which does the trick.
I was however somewhat loathe to ditch hp because I have a reasonable inventory of hp laserjet cartridges (some have been refilled 30 times and still going strong).
Spoke to my cartridge refiller and he pointed out that the print engine used in most hp printers is actually manufactured by Cannon. So purchased a Cannon LBP2900 and installed their s/w - and no more problems. And I still get to use my original hp cartridges.
FWIW