http://ubuntuforums.org/showthread.php?t=1602075&page=3 has many solutions to problems with this printer, however with 12.10 new problems have arisen.
I have tried all the solutions in the above post and the printer does not print. Network printing works fine for windows PC's as well as for Ubuntu 10.10 laptops and desktops sharing the printer, but one desktop running 12.10 will not work over network or USB connection. It is the only 12.10 machine.
The closest I can get is seeing the green data led on the printer flash when I send a test print to it over USB, but nothing else happens.
I provide free IT access for students, so don't have much money, so replacing the printer is not an option right now, as much as I'd like to because this Brother printer has always been a great big headache in Linux.
Any suggestions would be appreciated.