Noise on your line isn't caused by the distance you are from the exchange. I would suggest taking the bottom half of your
master socket off (if you don't know how to do this have a look in the phone book, it shows you in there) and plug a corded phone directly into the telephone line, if you can still hear crackling, report it to BT as it will be their responsibility to fix (try it with more than one phone before you do though). If the crackling stops, the problem is somewhere in the house, possibly loose connections on extensions, old wiring, etc. If this is the case it will be your responsibility to fix it, BT are only responsible for the line up to the master socket, anything after that is the responsibility of the home owner.
If you want to improve the speed of your broadband, I would suggest removing the bell wire from your master socket. Take a look at this
link to see how to do it. Or even better, replace your existing master socket with a new NTE5a type with a bell wire filter. You get pick them up on eBay for between £5 and £12, just search for NTE5a on eBay. It may sound quite technical but it's really simple to do HOWEVER you are not supposed to touch the master socket (except for removing the bottom half as mentioned above for testing purposes) as it belongs to BT so do this at your own risk!I can say from personal experience though, when I replaced my master socket, my download speeds rocketed

@danharvey you are the first person I've heard say a bad thing about O2

I am with them and have been for well over a year, speeds and reliablility are worlds ahead of BT, customer service excellent and price....£7.50

unbeatable! They are by far the best ISP I've been with and I've been with quite a few. I could never justify paying BT the prices they charge for broadband, it's scandalous!
@cameraman not sure why you are having trouble using BBC iPlayer or watching videos on youtube with a 1.8mb connection

Are you sure you're getting this connection speed? If you are I would seriously consider purchasing some anti-spyware software (Spyware Doctor is an excellent one) as it sounds like you may have some spyware on your PC hijacking your connection. Don't rely on your regular anti-virus/firewall software to remove spyware.
Lee
