I have a couple of IRC3220 with N rom which shows waiting to print when processing certain pdf, word, excel files, from windows xp, windows 7 and mac. What could be the problem? Once the document is in the 'waiting to print' mode, the document cannot be cancelled or deleted. The copier has to be switched off totally. I have tried the pcl5c driver and ps driver, same results. UFR does not support windows 7, right?