Most homepages have at least one, more likely two links that point to themselves. I can't for the life of me thing why Google (or any other engine) would count them as important links, but by the same token they isn't any logical reason to penalise the page either.

If you're using specific (different) anchor text on these different links though, it could be viewed as an attempt to game the system.

__________________
Andy Fletcher, not the famous one.