I finally gave in and called Comcast tech support a few days ago. The tech I spoke with could only tell me that they had recorded about 180 instances of "bot-like activity" coming from my ip over the past month. He wasn't able to tell me what, specifically, the bot-like activity was, but he did try to point me in the right direction. He said my choices were to have the system professionally inspected, ignore the notices, or try to get help from an online forum like bleepingcomputer.com. Hence, this is why I'm here today.
I haven't noticed any unusual activity on my computer or my email accounts. And as I mentioned earlier, none of the scans I've run on my system have turned up anything. Any ideas? My computer is running Windows 7 Home Premium 64-bit.
Edited by hdarb, 26 October 2011 - 07:46 PM.