Like the subject line says, since I upgraded to 3.2.1 this summer I have had the strangest problem.
When I go to a page, either on the blog or on the back end control panels, the URL will load completely and the page will be a blank white page. If I hit the reload button it comes right up, normally.
I have confirmed this on multiple computers/OSs, and browsers.
If you want to check it out, visit: http://blog.knightsquest.org
BTW: It is NOT an "always" thing. It IS on the home page and on the control panel's home page, but it is hit/miss on other pages.