VM speeds are highly dependant on how many people you're sharing with, and whether they're your average home user or leeching students like Kos. I've never had any serious issues in about two years of service now, aside from slightly abnormal signal levels which they sent an engineer to correct (signal was too strong, would you believe it..). The caps are pretty generous too, and they don't kill you, they just throttle to a point where it still ends up faster than most people's ADSL anyway.
Edit: here ya go http://help.virginmedia.com/system/selfservice.controller?CMD=VIEW_ARTICLE&ARTICLE_ID=2781&CURRENT_CMD=SEARCH&CONFIGURATION=1002&PARTITION_ID=1&USERTYPE=1&LANGUAGE=en&COUNTY=us&VM_CUSTOMER_TYPE=Cable
EDITED: 11 Oct 2012 08:25 by NUKKLEAR