[Evolution] error in expunging mail in trash

[Stephane Regnier <stephane mcs st-and ac uk>]

Hi all,
I would like to know is someone has a clue on how to solve the following
problem:

I am not able to expunge the trash of my mail box and I receive the
following message:


"Error while Expunging folder.
Error storing `~/.evolution/mail/local/Inbox (mbox)': Summary and folder
mismatch, even after a sync."

Thanks for your help ...