Horrible download speeds but good upload speeds

[qliphoth93]

Hey guys New guy here, with a sort of noobish question...

Recently I began running uTorrent on a new computer with the 64-bit version of Windows 7 installed. I previously had a computer with XP SP3 running the exact same spot, using the exact same connection. At any rate, I am usually able to get a download speed of about 120kBps, which is rather decent; however, as of late, I sporadically have short periods of time where my torrents download at great speeds, but most of the time, they remain at a downloading speed of about 5-10kBps.

On the other hand, my upload speeds seem not to change much, and goes all the way up to 60kbps at times. I have used certain methods that were supposed to enhance my download speed, like changing the net.max_halfopen setting to 20, the bt.tcp_rate_control to false and setting bt.trans_disposition to 26, I also disabled the "apply rate limit to uTP connections" setting, as well as used a port that Glasnost suggested. Could my ratio be a possible factor to the problem? I currently have a pretty bad ratio right now (0.197), but it's only because of the freshness of this PC, I had a great 1.325 at a point with my XP machine.

I run McAfee Antivirus and Firewall, which on my XP system never caused trouble, and has uTorrent as one of its exceptions on this machine.

So, any suggestions guys?

[rafi]

You are welcome to have a look at the tips in my sig (and my settings file)