I've got a brand new Dell Optiplex 755 with XP Pro SP3. I set up 18 of these just the other night, all the exact same configuration, and all of them work fine except for 1. When attempting to print a PDF file, it freezes as soon as I hit print. 5 minutes later it will unfreeze and let me complete the printing, but it's taking excessively long. I had another strange problem printing out of Office 2007 Basic on the same computer - when I tried to print, it would hang up indefinately, and lock the whole application up. It did this out of Word, Excel, and Outlook. I fixed it by deleting the Drivers folder under \Windows\System32\Spool and reinstalling the printer driver. I did the same process this morning when the user reported PDF printing troubles, but that didn't seem to fix it. I deleted the user's HP Laserjet 1022 printer, and installed it as an HP Laserjet 5, which prints test pages fine, and prints out of word fine, but Acrobat still hangs. I uninstalled Acrobat and reinstalled, to no avail. I'm deleting Acrobat's temp files and will see where that leaves me, but has anyone else seen anything like this?