Background Information
After applying the IE Active X update contained in the April Security update (KB912812), navigating to the Status Reports page in PWA causes Internet Explorer to use 100% of the processor for several minutes. After you regain control and click on a text box, it locks up your processor again.
Resolution
Microsoft has released a patch to fix this issue. You can read about and download this patch at the following URL:
Compatibility Patch for Internet Explorer for Windows XP Service Pack 2 (KB917425)