Glitchy internet connection when running bittorrent...

[hopp]

When you can't browse the Internet, what do the status lights on your modem tell you? Is the status light still on? Is the Activity light on/blinking? If so, you are probably still connect, you're Internet connection is probably just timming out. You may need to decrease the number of connections your bittorrent client uses.

Take a look at this link, tons of bittorrent client help.