I cannot expunge deleted messages. now they are all in the junk folder but they remain inside even after restart of the computer.

Description: Ubuntu 11.04
Release: 11.04

evolution:
  Installed: 2.32.2-0ubuntu7
  Candidate: 2.32.2-0ubuntu7
  Version table:
 *** 2.32.2-0ubuntu7 0
        500 http://de.archive.ubuntu.com/ubuntu/ natty/main i386 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: evolution 2.32.2-0ubuntu7
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
Uname: Linux 2.6.38-10-generic i686
Architecture: i386
Date: Fri Jul 22 18:42:25 2011
ExecutablePath: /usr/bin/evolution
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
ProcEnviron:
 LANGUAGE=en
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: evolution
UpgradeStatus: Upgraded to natty on 2011-05-22 (60 days ago)
XsessionErrors: (evolution:1486): libebook-WARNING **: e-book.c:3095: cannot get book from factory: Invalid source