This bizarre bug just started happening yesterday.
Whenever I try to connect my phone via usb, and move or interact with a file in any way, the window freezes completely. And any attempt to reconnect the phone fails.

I'm running stock android kit Kat 4.2 and my phone was never rooted.
I tried switching cables, I tried switching computers, I did a factory reset, and I'm still experiencing this problem.

This just started happening yesterday, I spent all day looking for answers, tried usb debugging, could not find anything similar, and nothing works...

If anyone knows anything about this I would really appreciate help, I'm at a complete loss here.

my WiFi suddenly started having an issue where the WiFi will connect for a few seconds then disconnects saying its searching for connections, it started out of nowhere and I'm running the "[STOCK][D6503] Pre-rooted/stock 23.1.A.1.28 NCB [LATEST FW][UPDATED][May 4th 2015]" firmware.