BearShare can put a heavy load on the internet drivers. There's a handy little
speed throttle built into the indicator graph next to the lights that can help.

http://www.bearshare.com/help/bandwidth.htm

Do you see the little triangle at the right end of the graph? It's on the right
end next to the lights. Grab it and drag left until it's farther left than the red
and green speed bars were going. Once you are done surfing you can put it
back to the right end, letting BearShare hog all the bandwidth again.

If that still isn't helping maybe you have other problems. If you want help
with that get BearShare Diagnostics and follow the directions in that tool.