A friend asked me to have a look at his connection as he's been having problems with his ADSL broadband connection (disconnections and slowdowns to the point of un-usability).
After checking his firewall etc. was working properly and checking for viri and spyware with no problems, I did a few other checks and one thing I noticed was the speed of the connection was some 4Mbps where as BT's line checker says "Our initial test on your phone line indicates that you should be able to have BT Total Broadband with a likely maximum speed of up to 2.5 (Megabits per second)."
Could this be the cause of the problems? If so who do I contact to get them to slow it down? The ISP or BT?