OK, what have I done now?
Mail won't keep passwords.
Keychain has double, triple entries.
MobileMe Sync to Keychains, won't.
Now my Mail is screwed up at work AND home.

Is it safe to delete all keychains and start from scratch?
Can I back them up and reinstall as necessary? (I still have the old backup from my G5, if needed).
Keychain First Aid did nothing…