I just installed a fresh version of Kentico and hotfixed it to .38. I'm getting extreme slowness when I choose a a new page template or webparts. As long as I stay away from these two areas the CMS is fairly responsive.

http://screencast.com/t/PUtvOVCKw6

As you can see, a script was running forever and the firefox memory usage went through the roof.

Any idea why this may be? Maybe I have something turned on in the site manager that I shouldn't?