would you say your wireless router was 'modern', is it less than 1 year old say. How recent is your firmware? Post leopard release date? I ask as i'm now pretty sure my problems must stem from the age of my router, it is 3 years old and running firmware that was last updated pre leopard. I'm fairly sure that the problem can't be software anymore, 10.5.2 fixed a lot of people's issues. A lot of people say the AEBS is the best thing to be using - i've not seen many people have problems with that.