There is a problem where feedburner is not able to correctly interpret the date format of the current output in the rss feeds.
Change this:
"yyyy-MM-ddThh:mm:ss+00:00"
To this:
"R"
Id #28110 | Release:
XML Utility v01.02.00
| Updated: Jul 16 2010 at 2:40 PM by hismightiness | Created: Jul 16 2010 at 6:25 AM by hismightiness