[Castout]

Originally Posted by sertore

To be a bit more sure, install free version and run a scan with http://www.malwarebytes.org/

I just did last night and it reported my PC as being clean. My PC is installed with firewall and security suite with 2 different AV which work fine together.

Originally Posted by Krabb

Port 1900 is Universal Plug'n'Play. It is used to automatically configure network devices. Do you have a router?

I don't think so I've only a cable modem.