KMail "Retrieving Folder Contents

[Timothy Murphy]

Sometimes I get the message 
"Retrieving Folder Contents 
Please wait"
when reading email on on KMail (under Fedora-19).
Nothing happens after this.
If I close KMail and re-open it, the message is still there.
Even if I log out (Ctrl-Alt-Backspace) and login again,
the message remains.
The only solution I have found is to re-boot the machine.

Has anyone else met this problem?
It occurs every 2 or 3 days, so it is not fatal.
But it is rather annoying.

-- 
Timothy Murphy  
e-mail: gayleard /at/ eircom.net
School of Mathematics, Trinity College, Dublin 2, Ireland