Firstly, you've got your kilobits/kilobytes mixed up.
kbps = kilobits per second
kBps = kiloBYTES per second
I'm going to assume that you mean kiloBYTEs.
Deleting your history, cookies, temp internet files will have no effect on your download/upload speeds. I'm not sure why support suggested you do that.
Which new ISP are you with?
What plan are you on? You said you have a 7Mbit download speed, but what is your upload speed?
Go to
http://www.speedtest.net/ and report back your actual download and upload speed.
In your bitTorrent application, make sure you set your maximum UPLOAD speed to be 80% of the upload figure.
No members have liked this post.