WebProcess memory leak and runaway CPU usage

Steps to reproduce: Visit http://www.untangle.com/store/get-untangle?version=64usb&dld=submit in Safari

Notes: Visiting a certain page causes WebProcess to have a memory leak continually eating up memory until the process is killed. CPU usage of WebProcess also maxes out a core making the UI unresponsive in Safari.

Result: I watched the memory usage go up to 7.6GB before I killed it multiple times.

Configuration: Plugins, Java, Javascript and all Extensions disabled gave similar results.

OS X Lion 10.7.4 Safari Version 6.0 (7536.25)