Alright I'll explain better.
I have notice it is just DCC sending in general, from XDCC/Fservs/TDCC anything involving DCC.
What I mean by kills my internet connection is, the internet that was once functional on my computer (no other comp on the network is effected) will stop running until I reboot my computer. So it isn't the router or cable modem then.
I have Anti virus and spyware protection.
I've reinstalled mIRC, hell I reformatted, and same problem. I don't understand it...