We're not customer, we're prisoners
I'm one of the new customers this year, and it's diabolical.
I'm on the verge of using the trade descriptions act "unfit for purpose" clause to get out of my 12 month contract.
Tiscali have serious network problems, the forums are full of people suffering.
The common theme seems to be bandwidth. From what I can deduce, Tiscali are adding far too many people to an already congested network, and then packet shaping many services into oblivion. If you only browse the web, you'll probably be alright. If you dare to use anything else, voip, multiplayer game etc, good luck.
As for peer to peer, forget it. It took me 5 days to torrent down one debian DVD image... And they call that a 2 meg connection.