You probably shouldn't put your username out there.
But, if you were using KaZaA, you should d-load Ad-Aware at
www.ad-aware.com and clear your comp. of the spyware that the program puts on it. Deleting Kazaa will not get rid of it.
Press Ctrl Atl Del, you should see a running process called news.net or something similar, that is the spyware. Possibly, Dionysus, that is causing the problem as it saps valuable resources will it transmits your info across the NET.
For, CrimsonTide 4, you should d-load Trillian,
www.trillian.cc it is a free messenger that combines all of the messengers into one, keeping your categories separate and distinguishing between the messengers w/ Icons.