I bet you've heard of how crap NTL support used to be. Well when I joined them 4 years ago it only took 2 months to get my internet up and running, after probably 50+ phone calls each lasting half an hour+. They were completely useless, each "technician" told me a different "solution" and not one of them worked. Ended up fixing it myself after discovering the USB adapter they provided me was faulty. I was with them for a 4 years, with bad service, connection getting cut off for days on end, etc.
I thought I'd had seen the worst of tech support, that was until I made the worst decision of my life of switching to Sky broadband. ¬_¬ 3 months to get up and running, even getting involved with their top tier in support and BT wholesale - still they couldn't fix my internet. In the end I found out it was down to bad physical lines installed in my house, but why the **** they didn't warn me about this BEFORE tieing me down to a 1 year contract (which was completely useless to me) I will never understand. Pricks. I was on 256k (signed up for 8mb) for 4 months and had to get sign up to Virgin, so I was paying for 2 internet connections all the way up until this feb.
I was glad to find though, that since Virgin took over NTL, there's been a complete turnaround! No loss of service, everything just WORKS! Support is brilliant too, and the two times I've had to call them (once during setup) they got me up and running within 5 minutes
My advice - DO NOT JOIN SKY without asking them what speed your lines can handle, you might just be lucky enough to get stuck with 56k ¬_¬
and Virgin are a godsend! I get the full 20mbps that I pay for. ^_^