I get between 13 and 16 mbps on cat5 and anything between 0 and 8 mbps on wifi at my kitchen table. I've put that down to interference from the fridge, kettle, my mobile phone...etc. When I first switched to Talktalk, I was getting disconnected up to 20 times a day, but I haven't had many problems over the last couple of months. Atmospheric conditions (high pressure) also seem to have a negative effect on my wifi.
