Hi there, So here is what happened exactly in the following order: - Had a MacBook Pro 15" using Mail as my main email client. - Had 5 IMAP accounts set up (1GMail, 1MobileMe, 3 own domains-hosted also at Google via Google App) - Had passwords of those 5 email synced to MobileMe keychain. - Sold my old 15" MacBook Pro - Changed Password of Gmail account and 3 own domains while I had no laptop for a few days - Got new 13" MacBook Pro - Configured Mail and Added all my 5 E-Mail accounts again. Everything worked perfectly. - Afterwards a few days realized I did not have MobileMe Keychain sync active. - When activating Syncing keychain I accidentally clicked "Overwrite local Keychain with MobileMe one". - Because I changed my passwords of my GMail and my 3 own Domain email accounts between the last sync of MobileMe, the passwords were obviously not working. - Mail prompted me for the new password. I entered it. Password was accepted for GMail Account and 2 out of the 3 of my own domains, but for some strange reason not for the 3rd domain! Tried loads of times over several days, restarted the MacBook. Even removed the email account in Mail and added it again. It just won't accept the password. Password works via Webinterface and still on my iPhone, just no longer on Mail. I noticed every time I open up Mail preferences the password field of that email account is empty! Although I enter it, save it but as soon as I go back to the preferences, it's empty again. Another thing that happened a few hours later, my GMail account stopped working! Although it worked perfectly before! (even after the accidental sync and re entering the correct password then) It's not asking for the password, it's not giving me an error message, nothing at all, it just has the little "in progress circle" next to the mailbox name, saying it's working, but nothing ever happend. No emails fetched in the past 12 hours and keep saying it's busy. When logging into GMail web interface there are at least 30 new emails. Gmail still works on my iPhone. Restart of MacBook did not help. The 3rd Thing is, the same time GMail stopped working, the outbox seems VERY slow. I sent 5 emails, plain text and it took almost 3 hours for them to be sent! It keeps saying 0KB or 0.1KB/s when sending. My internet is definitely faster than that. Restart also did not help. I wonder if any of that has to do with the fact that I am traveling a lot in the past 3 days. Moved from Ireland to Canada and I am in StarBucks and different friends places a lot. All the passwords still work, so nothing has been hacked. And E-Mails, are being sent normal speed from my iPhone via the same WiFi connection, so it's not my friends internet nor Starbucks. Bottom line: Since accidentally syncing with MobileMe Keychain, every thing is messed up! I even turned off mobileme keychain sync, but doesn't help.