[Evolution] Can not empty trash

[Ramón Alcain <alcainca ono com>]

I use Evolution 2.26.1 with Ubuntu 9.04 and now I can't empty trash. It
produce following errors:

Error saving ~/.evolution/mail/local/Sent (mbox)
Error saving ~/.evolution/mail/local/Inbox (mbox)
Resum and folder doesn't match after syncronizing

This is a translation from spanish. May be this error in english could
be written different, but I hope you understand it.

That never happened during years until recently. Could somebody tell me
what to do to empty trash?
Thanks

Ralca