Intresting Results on active connections do you have a mobile phone device attached to your wireless router if not then I am intrested to find out what is robbing so much internet.
this may explain some things, someone might me highjacking your pc and using it as they will in the background.
what had made me think this is your active connections PID 4868 is not listed as a process which means this is being high jacked is your wireless router password protected?
do a full security can of your processes using the following program.
let me know how you get on I will right you some software to run