Version:            (using KDE 3.5.8)
Installed from:    Debian testing/unstable Packages

Reported in Debian BTS at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=456284

I select the last (lowermost) message in the message list pane and
press F5 to check the IMAP account for updates. Then the message list
goes hyperactive: First new messages are added (to the bottom of the
list in my case) causing the previous entries to scroll up. Then the
new messages are temporarily removed, and the list scrolls
back. Finally the new messages are re-added.

The resulting flashing, scrolling and updating is very
irritating. This happens even if there are no new messages. In that
case it scrolls back and forth a bit, and when it stops updating the
current message is no longer the one I had selected but the previous
one.

Repeatedly pressing F5 with no new messages causes the selection to
alternate between the last and next-to-last message. Clearly a mail
check should be a no-op from the user's perspective if there are no
changes.

I tried turning off threaded view, but it happens regardless of that.