Last week i wasn't able to use my internet banking due to the https certificate not being recognized. At the same time, some websites would not load, and Chrome kept saying i wasn't connected to the internet - which i was, as pages loaded normally on my phone. I reset my router to factory setting and reconfigured the network settings to no avail. It was only then that i found that my LAN is set to a proxy server on 127.0.0.1:30828. Once i unchecked that, everything was fine, but that option gets checked again (with a different port) everytime i reboot.
As i was snooping around my active p