no I don't run any hosts files at the moment. my reason for staying with BT as long as I have is in the hope I would be invited to the trial so I could attempt to analyse it's effects. Firstly without any hosts file or blocking in place, then with various types of 'countermeasure' in place. If I do get invited I will swiftly be requesting my mac code and gathering as much info as I can before switching to another provider.
Edited to add I'll be switching to another provider either way as BT no longer deserve my custom.
