So out of nowhere yesterday my 750 starts acting goofy. Touch screen works, then doesn't work. 5-way works, then doesn't. A couple soft resets later and it works, then doesn't.

At one point while everything is working I backup then hard reset. Restore and everything seems fine. An hour later the 5-way is reversed: R&L is up and down. Up and down is R&L.

Any advice? I'm using 6.1 which has been super stable on the 750 for months. Now everything is goofy and it's very sluggish pretty much out of nowhere. Just in the past day or so. Weird, no?