Android :: EMail Application Randomly Delete Accounts

1. I add an account or two (POP3 or IMAP) to the built-in Android Email or Android Market K-9 app,
2. The non-GMail e-mail works mostly OK for some time (a day or two, an hour or two, etc.); (I do get connection errors, I can't completely delete POP3 email, there's no POP3 auto-checking nor notifications, etc.--for now these annoyances are manageable.),
3. At some point in the future, I go into the app to check mail, and POOF! Everythin' B gone. I'm greeted with the setup screen, as though I had not created the account(s) previously,
4. I recreate the account(s),
5. GOTO 2.