Hi Sandro, great! This did the trick. I deleted the line beginning with "Headerstate" and everything is working fine again.
However, I knew, that the entry must have been in kmail2rc, but I could not really understand the values in this line. I can only confirm what you said: not really readable by humans! Thank you for very much your solution. This bugreport can safely be closed. To all helpers: Thank you very much for your efforts! Best regards Hans > Well it working for me. The setting is inside .config/kmail2rc: > > [CollectionFolderView] > HeaderState > HozizonalScroll > VericalScroll > > deleting those three keys should trigger kmail ti preset them with default > values. Unfortunatelly HeaderState is not really readable by humans, this is > some Qt interal dump. > > hefee
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