I think you just have! But just in case, these are Parksy's recommendations for how to deal with this:
If your comments fail to load onto the forum page your will need to configure your IE9 to resolve a compatibility issue.
To do this:
Click on Tools
From the drop down box which appears click on Compatibility Settings from the Compatibility View menu.
In the dialogue box which will open from Compatibility Settings, type practicalcaravan.com into the 'Add this website' box
Click the 'Add' button
The full instructions with graphics etc can be viewed
Here