We currently have a wireless router in the dining room that throws out a good signal all around the house. Except however my sons PS3 (upstairs) keeps on dropping the connection whilst playing online games. So I decided to run a telephone cable up into his bedroom, plug the router into this extension socket then hard wire via Ethernet the PS3 into the router. I now have the problem, although the PS3 works well online, the other computers keep on disconnecting from the wifi. (even when one of the comps is literally in the next bedroom)
Any ideas / solutions would be very much appreciated thanks.