I've had a few days with problems like that, but I know in my case it is our internet connection that is playing up. Could that be the case for you? Do you know how to check your download speed? that will give you a clue as to whether it is the connection which is playing up. It stinks, I know! We have an engineer coming out tomorrow but I have no faith that he will be able to solve the problem since I strongly suspect that the problem is a lack of resources on the part of my isp ... thinking about going elsewhere except it is such a hassle to do!