NSTableView leak

Question

I wrote a very simple to-do-list program(it only has 3 methods). Then I did a Build&Analyze to make sure everything checked out. When I used the Leaks performance tool it told me I had a leak. I couldn't figure out where the leak was coming from so i commented out ALL of my code and still had a leak. So for a test I made a NEW cocoa project and added a table view using interface builder(No code was typed in by me). And the new project also had a memory leak.

So to clarify:

1. I made a new cocoa project
2. Opened mainmenu.xib and added a table view to the window
3. checked it for leaks

So...even when I add no code of my own I get a leak using tableView?