Lost access to Exchange public folder

Hi,

On monday I upgraded to Office 2010 on our terminal server.

We are running Exchange 2007 on a 2008 Small Business Server.

After this upgrade, I cannot access public folders anymore.
We have only used one public folder, and that was an email public folder for the leader of the company.

This folder is now unavailable, both from outlook 2010, outlook 2007 on a older installation, and also from the outlook web access!...

I do now know if the 2010 upgrade has anything to do with this happening, but I thought I would bring it up as an element just in case.

Now, the folder has been used every day, and stopped suddenly after the upgrade.

Anyone have an idea what could have happened?

As you can see from the image, the public folders tree is not showing any content, allthough there is a folder there.