If viewing through Firefox, you see the up-to-date site (current posts, layout, etc).
If viewing through IE, you don't see anything more recent than March 19th (posts, layout, etc).
*edited to add: the same problem happens in Google Chrome too.
If I go into my dashboard in IE and then view the site, I see everything (except for my GFC and Networked Blog widgets) current.
But, if I update in Firefox (my preference) it doesn't update IE.
HOW do I fix this?