Right now I'm trying to transfer a 245MB file from my iMac and the speed is super slow!!! fluctuates from 40-50 minutes. I have a 2.16 Macbook and an Alu iMac. Shouldn't they both be 802.11N, and the Airport Extreme base station, i have is the pre-gigabit lan. Also sometimes the wireless network stops working, and it'll come back whenever it feels like it. the wired network would work if i plug it in. this is not just limited to my macs but my roommates PCs as well. How do I go about getting a replacement? This thing is pissing me off.