I decided recently to try out networking over the house wiring and bought a box of 3 devolo av200 plus passthrough devices. Two worked (well) - but one had a high-pitched whine (not that /I/ could hear it!) and after a day started running incredibly hot with a very low bitrate. (The ethernet socket was untouchable) They all went back, and the vendor sent another box of 3 units. Two worked - the third simply refused to connect to the others on the mains network despite me running through the trivial "configuration" procedure several times. The vendor tells me he's never seen a fault in these units before. Devolo tell me to "configure" the device. Which I'd already tried; several times. Anyone care to comment please on their own experiences? Am I just amazingly unlucky?