Some NNTP news folders go blank after update

Binary package hint: evolution

News folders initially behaved properly. Click on a folder and status says "NewsServer: Scanning for new messages" and then "Opening folder newsfolder@newsserver" and
"refreshing folder(..." and all previous posting disappear leaving an empty window. This has happened to some folders, not all so far.

Started Evolution manually with --debug=FILE option and got the following:

(evolution-2.10:11412): evolution-mail-WARNING **: Error getting folder info from store: Error retrieving newsgroups:

111 20070620162936 UTC
process 11412: The last reference on a connection was dropped without closing the connection. This is a bug in an application. See dbus_connection_unref() documentation for details.
Most likely, the application was supposed to call dbus_connection_close(), since this is a private connection.

The first time I ran debug I also saw a message that said "could not open /usr/bin/bogofilter, file not found". Which is correct, file doesn't exist. Should it?

Another message was something like camel -L error, I googled it and there had been
a bug report opened in a previous version, 2.6 I believe, but it had been closed without
fixing it apparently.

ProblemType: Bug
Architecture: i386
Date: Wed Jun 20 19:12:36 2007
DistroRelease: Ubuntu 7.04
ExecutablePath: /usr/bin/evolution-2.10
Package: evolution 2.10.1-0ubuntu2
PackageArchitecture: i386
ProcCmdline: evolution --component=mail
ProcCwd: /home/ktweed
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: evolution
Uname: Linux spirit 2.6.20-16-generic #2 SMP Thu Jun 7 20:19:32 UTC 2007 i686 GNU/Linux