i have firefox 3.5.8 (with auto-update enabled, so i don't know why you've got 3.6 and i don't - could yours be a beta version, i wonder... anyway)
and the EasyList USA enabled/subscribed also.
If by "google ads" you mean the banner ads that show on every page top and bottom - yes, i still see those.
wait a minute - ok, i've just gone into the settings that allow me to 'filter' specific urls (open blockable items - note that this is not easily done in the preferences dialog)... and there was "googleads.com".
so just installing it didn't help, looks like you need to manually add filters... (see image attached)
then gimme a moment to check.