Rated 5 out of 5 stars

I prefer to use the "old" AdBlock: here you can download a compatible Firefox 3.5 version (modified by me):
http://www.filefactory.com/file/ahaf30c/n/adblock-0_5_3_043-ff3_5_xpi
Hope you like it!

This review is for a previous version of the add-on (1.0.2).