KMail is driving me mad!

Hello list,

First, my keyboard shortcut to start KMail has been reassigned behind my 
back so that it just opens a new message box, instead of starting KMail. 
I've had to delete the shortcut and assign it again (to the same value).

Next, the old problem of duplicates has come back with a vengeance. Not only 
do I get duplicates, I now also get messages resurrected that I deleted 
hours or days ago (and emptied the waste bin, and rebooted). The same ones, 
over and again.

Third, the number of unread messages is often wrong. This morning my inbox 
was shown as having two unread messages, when I'd already read or moved them 
all.

Fourth, the way I fixed that was to archive the inbox, delete all its 
messages and import the archive. When I moved the messages back into place, 
the numbers showed one getting left behind, but there was no trace of it, in 
either folder.

Fifth, the behaviour of Ctrl-A has changed. It used to select all the 
messages in the message list. Now I can't get it to do that at all; it 
selects either the whole of the current message or the whole list of 
folders, depending on what I clicked last. I've checked the assignment and 
it's correct. I can't override it to the same value, because it then wants 
to assign a null value to the default, which is what I'm trying to 
reinforce. I backed out, not wishing to start an infinite recursion.

That's all I can think of at the moment. This is not a relaxing way to start 
the day...

One redeeming feature: I can now type "colour" and it's recognised. I don't 
know what's changed, but I didn't do it.

-- 
Regards,
Peter.