[Evolution] Evolution 2.30 / New Mail Notification / OpenSUSE

[Adam Tauno Williams <awilliam whitemice org>]

I have an openSUSE 11.3 box with Evolution 2.30.1.2-3.9.x86_64.  Mail
notification doesn't seem to work at all.  The mail notification plugin
is enabled, set to generate d-bus messages, display in the notification
area, and to beep.  It at least doesn't do either of the last two.  What
is the best way to debug mail notification?  I never see the evolution
icon appear in the notification area.