Comment # 5 on bug 1043536 from Stakanov Schufter

And disregard this, as it is normal. 
I did rename mercurio. Then I did change the user ID. 
Later I did create a new user with the name mercurio and migrated the directory
content. 
Then I did create a new kgpg key
I then opened kontakt, imported the mail without and addresses from an archive.
And I did set up from the scratch all new accounts. 

It worked fine for a few days and than this strange "passwordless" behavior. 


So the given info is probably unrelated.