You should run the update-manager to update the unity packages, it has been implemented since then. I also have a natty alpha2 installed, and with all updates, the applications place works as expected.
** Package changed: firefox (Ubuntu) => unity (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/726319 Title: Applications are not showing up in 11.04 Alpha 2 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs