I've always had a wired router but recently bought a wireless one so I could play BBC iPlayer through my TV.
It is usually fine but sometimes gets extremely slow both for sending and receiving emails and for connecting to websites. So I have today tried going back to my wired router and it is much quicker. Is this a coincidence or a known fact? I live in a very rural area.
BBCi player depends on internet speed. 2 Meg is the minimum I think for goodish performance. Try running a speed test a few times in a day on Ethernet and do the same again on wireless. This one is quite good.