evolution filtering freezes with panel notification enabled

Binary package hint: evolution

Problem:

Evolution filtering freezes with message "Filtering new messages (0%)". Evolution gives no indication that a new mail has arrived, doesn't show unread messages in my folders, and definitely does not take the actions defined in my filters on messages.

This appears to only be an issue with both junk filtering and panel notification turned on. If I turn off one or the other then all of my filters are completed successfully.

Expected result:

I would expect filtering to complete when new messges arrive. I would expect the messages that match my rules to have actions taken on them. I would expect to be notified of new messages when they arrive.

Work arounds:

I seem to have a choice of two work-arounds.
  * Disable junk filtering (Mail Preferences -> Junk -> Check incoming messages for junk)
 or
  * Disable panel notification (Mail Preferences -> General -> Indicate new messages in the panel)

I have included a backtrace. It was captured with both Junk filtering and Notification enabled. It seems to point at org_gnome_mail_new_notify doing something, but I don't know what.

Release info:

Description: Ubuntu 9.04
Release: 9.04

Package info:

adam@pcAcr ~ $ aptitude search evolution | egrep '^i' | awk '{print $2}' | xargs apt-cache policy
evolution:
  Installed: 2.26.1-0ubuntu1
  Candidate: 2.26.1-0ubuntu1
  Version table:
 *** 2.26.1-0ubuntu1 0
        500 http://ca.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
evolution-common:
  Installed: 2.26.1-0ubuntu1
  Candidate: 2.26.1-0ubuntu1
  Version table:
 *** 2.26.1-0ubuntu1 0
        500 http://ca.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
evolution-data-server:
  Installed: 2.26.1-0ubuntu1
  Candidate: 2.26.1-0ubuntu1
  Version table:
 *** 2.26.1-0ubuntu1 0
        500 http://ca.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
evolution-data-server-common:
  Installed: 2.26.1-0ubuntu1
  Candidate: 2.26.1-0ubuntu1
  Version table:
 *** 2.26.1-0ubuntu1 0
        500 http://ca.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
evolution-data-server-dbgsym:
  Installed: 2.26.1-0ubuntu1
  Candidate: 2.26.1-0ubuntu2
  Version table:
     2.26.1-0ubuntu2 0
        500 http://ddebs.ubuntu.com jaunty-proposed/main Packages
        500 http://ddebs.ubuntu.com jaunty-proposed/main Packages
 *** 2.26.1-0ubuntu1 0
        500 http://ddebs.ubuntu.com jaunty/main Packages
        500 http://ddebs.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
evolution-dbgsym:
  Installed: 2.26.1-0ubuntu1
  Candidate: 2.26.1-0ubuntu1
  Version table:
 *** 2.26.1-0ubuntu1 0
        500 http://ddebs.ubuntu.com jaunty/main Packages
        500 http://ddebs.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
evolution-dev:
  Installed: 2.26.1-0ubuntu1
  Candidate: 2.26.1-0ubuntu1
  Version table:
 *** 2.26.1-0ubuntu1 0
        500 http://ca.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
evolution-documentation-en:
  Installed: 2.26.1-0ubuntu1
  Candidate: 2.26.1-0ubuntu1
  Version table:
 *** 2.26.1-0ubuntu1 0
        500 http://ca.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
evolution-exchange:
  Installed: 2.26.0-0ubuntu3
  Candidate: 2.26.0-0ubuntu3
  Version table:
 *** 2.26.0-0ubuntu3 0
        500 http://ca.archive.ubuntu.com jaunty-updates/main Packages
        100 /var/lib/dpkg/status
     2.26.0-0ubuntu2 0
        500 http://ca.archive.ubuntu.com jaunty/main Packages
evolution-indicator:
  Installed: 0.1.13-0ubuntu1
  Candidate: 0.1.13-0ubuntu1
  Version table:
 *** 0.1.13-0ubuntu1 0
        500 http://ca.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
evolution-plugins:
  Installed: 2.26.1-0ubuntu1
  Candidate: 2.26.1-0ubuntu1
  Version table:
 *** 2.26.1-0ubuntu1 0
        500 http://ca.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
evolution-plugins-experimental:
  Installed: 2.26.1-0ubuntu1
  Candidate: 2.26.1-0ubuntu1
  Version table:
 *** 2.26.1-0ubuntu1 0
        500 http://ca.archive.ubuntu.com jaunty/universe Packages
        100 /var/lib/dpkg/status
evolution-webcal:
  Installed: 2.26.0-0ubuntu1
  Candidate: 2.26.0-0ubuntu1
  Version table:
 *** 2.26.0-0ubuntu1 0
        500 http://ca.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status