My wife's iMac prints fine for everything except pdf files. We had the problem with 10.3 and it still happens with 10.4. The pdf is in the printer queue of the networked HP1212 laserjet, and anything behind it will not print until I delete the pdf's from her Mac.
I can send the file to any other computer (Mac or PC) and print it fine on the same printer, just not from this particular iMac.
I thought I had seen this problem posted before, but cannot find the answer now.