My F700BT has the same issue. My first unit did not boot up when the installers tried to install it. I had to ship it back to Pioneer to get it replaced, so technically, this is my 2nd F700BT.
Since the 3.0 update (legal, no hacks, I'm a good boy!), I have randomly had to input my password into the head unit 3 different times, have had numerous times where boot up took minutes, and the GPS has seemed slow on response.
On a trip this weekend, I had to input the password the 3rd time. On the way home, the unit was working during the morning. We stopped for lunch, and when we starte