Mail forgets, forgets, forgets...

Hello

Since I upgraded to Mountain Lion (or 10.8), I see a lot of issues with Mail. It loses from time to time passwords, smtp settings and I need to reconfigure in order it works well.

Today I did it again, after I could not connect to any of the SMTP Server (4 of them). So I have redone everything, all settings, everything typed in new. At the end, it worked well, I received and could send mails. I closed Mail and before I shut down the Computer, I wanted to send another mail and opened Mail again.

What the heck happened? Despite my "iCloud" account, all other accounts (8 for different family members) disappeared. Not only I could not see any of the inboxes - no, in the settings "accounts" I only can find the iCloud account.

Oh Apple, I am really getting sick and tired about this. I had opened a call and got some support, but at the end of the day, it did not help at all. And now? This is a nightmare.

So, anyone else who has seen this and one of you who could fix the issue?

Are there any limitations with Mail? Eg in some past MS Outlook version there had been limitation on size of PST folders and numbers of offline folders. Anything known here?

Thanks

Cheers

Michael

PS:Using Mountain Lion with all the updates. The issue with the lost passwords and SMTP settings happened after I upgraded to Mountain Lion and I faced the issue several times before I contacted support. So, I have done several times the configuration already.