Disabling the 'aggregate latest version checking script'


I recently came across a server which was behind firewalls. The aggregate interface is running fine, but it keeps hanging up, saying CHECKING LATEST VERSION. Since the firewall doesn't allow outside access, the aggregate keeps in the wait-state until it times out. But this is happening on every page, and the interface does not let us perform any action until the timeout occurs. How to disable that version checking?