I had installed Omnibug to track Omniture events. After 2 days, Omnibug stopped working and freezes every time I click on it. On clicking Omnibug, all other tabs in Firebug (placed along with Omnibug) stop working. I have tried to re-install everything-mozilla firefox,firebug & Omnibug but nothing seems to work. Please find attached the screenshot. Also, for some reason firefox works with a web debugging tool for initial few days then stops working all of a sudden (ex: Fiddler, Charles, Omnibug)