any idea why BT always drop line

E46

I have Bitcomet 0.70, I have no problem with it, but after I download and run the Spyware Doctor.  My BT drop line like crazy. It always drop to 0 Kb/s for all of them. and the speed is very slow, even the upload speed is much lower than I set. b4 is always top of the limit which is 50 Kb/s. now is only 10 to 20.
9 U: n4 ]% P9 \4 n3 C2 {* LShould I unistall the Spyware Doctor. (I didn't ture it on guard.)9 j- z, _6 h* [7 a4 [
Anyone can help, please.