Google's "Add a Tab" Disappeared

I use Google Personalized homepage to keep track of some of my most read RSS feeds. They added a "tabs" feature a few weeks ago. However, now the "Add a tab" link has disappeared.

Before:
After:
Update 9/22/2006 @ 10:22AM: Aha. It turns out that Google instituted a max tab limit of 6. Someone found a hack around this limit however.