I have my macbook pro networked to a PC (running windows 7) and have had no problems sharing files and printing from the Mac to the PC connected printer (Epson CX 8400) until I updated Snow Leopard to 10.6.2. I can still connect to the network and share files, but a can no longer print. When I print from the Mac, the job stalls. The printer utility gives the following message "on hold (authentication required)". I do not have a password set up on the PC or the printer. I have no problem printing from a XP laptop connected to the network. I have updated the printer driver ,deleted and re-installed the printer. If I connect the printer directly to the Mac, it prints OK. Any suggestions?