Also, I assume that your ISP is Conway Corporation. If not, please say so in your next reply.
Your ComboFix and AVG Anti-Spyware logs are clean, so I don't know why your system is running slowly. Perhaps somebody else is going to have to enlighten you on that one.
try reducing the amount of applications that are running. do a defragment and run registry cleaner such as registry mechanic. if you want to know more about how to speed up your pc GO TO THIS LOCATION