Task Icon in Navigation Pane Doesn't Load Tasks Windows

Hi,
I have outlook 2003 (11.8010.8036) SP2, working off an Exchange 2003 server
and running on XP sp2.

In the Navigation pane in the bottom left corner I have the Mail, Calendar,
Contacts and Tasks Icons (shortcuts) when I click on all of the icons exept
the Tasks one the relevant window appears, however when I click the taks
icon, only the left pane appears for the tasks which shows the current views,
the right hand pane doesn't refresh and continues to show the previous
content. The only way I can open up the tasks is to right click and open in
new Window.

I think this is also causing my activesync 4.2 to fail. When I sync without
the tasks selected all works fine but it fails with the 8600107 error when I
chose to sync tasks.

I have tried a detect and repair and this has made no difference.

Any help appreciated.

Regards