We have three LaserJet 5500dn's... and have experienced various problems with the provided driver (mostly with printing multiple copies.) The fix was to use a LaserJet 5500 driver. HP was made aware of the issue and over 1 year later has not corrected the problem wth the 5500 driver.

Anyway, the moral of the story is: Try another HP driver! You'd be shocked to see how many will work -- and flat out work BETTER!

Cheers --

Aaron