Anyone have experience with Powerline adaptors? I just ordered a pair of TP-Link 500Mbps adaptors, and am wondering what kind of reliability - and speed - to expect. I've read one claim that typical bandwidth with Powerline adaptors is only about 15% of theoretical maximum, but if I could see even that 75Mbps reliably I'd be quite happy. I've given up trying to get my Wifi devices to work reliably (iPhone and iPad are fine - but my ATV and G5 server with USB adaptor are constantly dropping off the network). I just need a fast, stable connection between my living-room router and my media server in the study, and I would be sorted!