With so many people complaining about the browsing speed, there's one thing which immediately springs to mind.
On Sky, when using the Mini-Guide, if you hold down one of the arrow buttons, it skims through the channel list, enabling to speed through the listings to the channel you're looking for. Is there something preventing ntl from doing this?? If not, why don't they?? It could be included in the next MR.
Cheers,
Browneggsandham