2 ideas
1. You are having it sync to Exchange and Activesync is forcing a policy to force a password
2. Something has turned on Auto-Lock under Settings - General
If you run a restore it puts everything back including the password....
In regards to point #1, I am syncing with Exchange, but I've been getting mail for hours without a problem. I also receive mail to the Blackberry Enterprise Server. If Activesync was forcing a policy, wouldn't I be getting locked out every time my email tries to sync?
In regards to point #2, I've looked at my settings and no password has been set, nor have I previously set one.
It seems that this only happens after I hit the on/off/sleep button on the top right of the device (though admittedly, it doesn't happen every time, so it may be coincidence). Anyway, how do I go about troubleshooting? I called Apple and their agents seem absolutely clueless.
I was told to try to use the "transfer" button in Itunes when the password lock came up, but when I did that, the screen just toggled on for a brief flicker, then turned off. Nothing transferred. How do I ensure that if this happens again, I don't lose all my apps, and more importantly, all the settings that I've spent hours calibrating within the apps?