Nokia Lumia :: Marketplace On 800 - "New" Apps Not Changing?

I used to monitor "New" applications on the Marktplace and they usually updated every day or two, now, fo weeks I have the same - the "top 3" are:You tube downloaderBT Wi-FiFlash Cinemaand they've been there for at least a week. Other things work OK, though the "loading" of anyting on the markeplace takes much longer than before even when connected t the same WiFi speed as before) - for example, there is about a minute between when I touch an app on the apearing app-list and until I see the "install" "cancel" buttons (usually, I see some of the info loading, but not all and it takes age. I've restarted etc many times, no joy.