I'm having a few problems getting Growl and Adium to work together. Basically I do not receive any notifications of any kind during any adium operations (contacts signing on/off, file transfers etc.)
Adium IS in the growl applications window, the options are ticked, Growl is running so I'm not sure whats going on!
I successfully got Growl working with iTunes and it successfully reports registering etc.
I have tried both the latest Stable Adium release and the beta but still nothing.
To make Adium events work with growl you have to set up your Events Preferences (Which can be found in Adium's preferences). Create a growl notification for the events you want, and they should show up.
Hope it helps.