I have gotten a couple of comments from people saying that the header is not showing up for them. This seems to happen only once in a while and I have not been able to recreate the issue myself to try and resolve it.
But, there is one person who wrote me and told me that deleting the functions.php file from the theme fixed their header issue.
Can someone who has this issue try this and tell me if it fixes it?
UPDATE 3/25/2009: I have found the problem with this issue and it has been resolved. If you download the 1.6 or later version of this you will no longer have this issue.