If this works and feedburner updates it soon (possibly within an hr!) then my testing is over for wordpress feed to feedburner feed redirect. Lets see! lots of work need to do. Also my feed appeared to be larger than 512k or 576k So I need to set feed site to 5 post. Today feedburner has said when I was updating settings for correcting the problem.
For setting the number of posts to show in Feed, go to Setting->Reading then set the number of post in Feed subscription.
Error for larger Feed:
Your feed filesize is larger than 512K. You need to reduce its size in order for FeedBurner to process it. Tips for controlling feed file size with Blogger can be found in Tech Tips on FeedBurner Forums, our support site.
I also got this error:
Error getting URL: 502 - Maximum allowed response size is 576.0K.