[Bug 122096] gets in endless loop if IMAP server does not support selected authentication method

[Frank Reininghaus]

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http://bugs.kde.org/show_bug.cgi?id=122096         
frank78ac googlemail com changed:

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------- Additional Comments From frank78ac googlemail com  2008-04-03 00:08 -------
I might have had this problem today [KMail/1.9.6 (enterprise 0.20070907.709405), Kubuntu 7.10].

When starting either Kontact or KMail, there was an error message about my Google Mail account which I access with IMAP:

Authorization failed, Unable to login. Probably the password is wrong.
The server imap.googlemail.com replied:
System Error (Failure) authentication not supported

Clicking OK (the only option in this box) brought up a dialog asking for username and password. I then entered my password (I'm pretty sure it was correct) and clicked OK, but this only made the "Authorization failed" box appear again. I repeated this a few times without success and finally decided to click "Cancel". This caused KMail/Kontact to hang and use 100% of the CPU (reproducibly), so I had to kill it manually. I managed to get a few backtraces by sending the process the SIGSEV signal, I could attach one if anyone thinks it's useful.

After some time, the problem disappeared. I guess it was a temporary problem with the mail server, but I think KMail should give the user some way to get out of this "Authorization failed" thing (e.g., if he wants to check some other mail accounts that still work).

If this bug is the same thing that I experienced, it is not a duplicate of bug 109036 (in this bug, the dialog box pops up over and over again, but KMail does not hang).