My xbox has started doing something rather odd. When i first turn it on it won't connect to live, just keeps poping you "there is a connection problem test connection etc" go into that and it can see my wireless network test the connection and if fails at the first hurdle. However if i turn on the xbox and leave it for about 5-10mins and then try to connect it works. Why all of a sudden does it appear to need to warm up before it connects. Have tried resetting my bt hub and clearing my cach but still doing the same thing. Any advice?