Here is how to run your LBP3000 in Ubuntu 12.04-64bits.
For a LBP3000, the simplest way is to download drivers from the PPA mickael-gruz.
The 64bits Maverick version works well with 12.04.
1) Download and install transitional package "gs-esp" :2) Download and install from the PPA depot the 2 packages :3) Restart cups :
4) Modify the file /etc/modprobe.d/blacklist-cups-usblp.conf as indicated in my post #9
sudo service cups restart
5) See my post #5 in : http://ubuntuforums.org/showthread.php?t=1983091
Starting at point#1 and of course change LBP6300 with LBP3000If you succeed to print, see my post#6 in this thread for auot-ccpd management.