I've come to figure out that this printer is SLOW.........when it comes to just about anything. I'm in no hurry to do a firmware update. Really not looking forward to it myself and really wish they'd go ahead and hammer out any fixes instead of a lot of incremental updates.
Charles, I'm not sure what you consider SLOW about the Z3100.
HP is in a damned if you do and damned if you don't situation with regards to updates. Once people find a problem they get hammered to put a fix out. Then people hammer them for putting fixes out. Can't have it both ways. At least they don't come out on Tuesdays with the MS patches.
Of course, if you're happy with the firmware and driver you have then its your option to sit this one out.