ArcGIS 10: Script Error After Clicking on Description Tab

Here is a weird ArcGIS 10 bug for you.

Problem:
A blank tool window and a blank script error window, but only after clicking on the Description tab in ArcCatalog. 


(Someone reported that this error also occurs when you edit the item description (add metadata) for a model or script and appears to also be fixed the same way)

Solution:
In internet options, accessible through internet explorer or the control panel, go under the Security tab and set the level to Medium. There are no more script errors. To experiment, I went back and set it to Medium-High, the script errors returned, back to Medium they're gone! 

References:

1. ArcGIS Resource Center: ArcCatalog v10 Internet Explorer Script Error on page, Run ActiveX control