Remote printing problem using ssh tunnel in Leopard

Haho,

I've recently installed Leopard, and I have unexpected difficulties with setting up remote printing to the printers of my University via ssh tunneling. The following procedure worked (and still works) under Tiger, but for some reason it doesn't work with Leopard (not just for me, but other friends also have the same issue as I do). The question is what could be the source of the problem and how could I get around it?

So, I have the same short user name on my home Mac as my login name in the University system. Then, I set up the proper printers (IP printer, LPD protocol, Address: localhost, the appropriate queue and printer type etc.). Whenever I want to print from home to the University, I would open a Terminal window, and sudo ssh -L515:XXX.XXX.XXX.XXX:515 myname@domain.edu . This is supposed to channel the printing which is sent to a localhost printer to the printers which can be reached through the University IP address.

This method worked and works well under the latest version of Tiger, but not under Leopard (10.5, 9A581). I get no error messages, the printing seems to go through (at least no error seems to occur during spooling or logging in to the University with the terminal), but it simply doesn't prints out on the other end.

I have no firewall or any other new network tools running which I'm aware of, and I'm not aware of any differences in the set-ups besides the change in the OS. The issue might be that of compatibility with the University printing system, but help in what exactly changed on the Mac side (something obviously did change) would help me a lot, especially since I don't think that the University technical crew would be very keen on (or competent in, for that matter) troubleshooting.

Thanks in advance for your help!