[Evolution] IMAP bug in 2.4?

[Patrick O'Callaghan <poc usb ve>]

I recently had to make a minor change to my configuration. My IMAP 
server changed name (nothing else, just the DNS name), so I edited 
Preferences for the Receiving options, not forgetting to fix the 
Defaults (I keep Sent and Drafts on the server).

Now a bunch of my IMAP folders appear duplicated. Not all, just some. 
They appear to contain the same content, and in fact new messages show 
up in both "copies", but physically there's only one set of data on the 
IMAP server; I checked to make sure.

Clearly there's a synch problem with Evo's local state. I tried going 
offline and on again, tried deleting the account and recreating it, 
tried refreshing the mail, tried resubscribing to folders. Nothing makes 
any difference.

Is there any solution other than completely destroying my Evo 
installation and starting again? If not, what do I have to do apart from 
deleting .evolution?

poc (who's sending this via TBird just in case ...)