After download Firefox 9.01 load: TypeError: Components.classes['@checkpoint.com/XPCOMTrustCheckerMozilla/TrustCheckerMozilla;1'] is undefined

That error is from your Zone Alarm toolbar. Post your question on the Zone Alarm forum for the best answer to resolve the problem -- be sure to tell them that you also have any other security program (i.e., Norton, AVG, Avast, etc.) installed as well as your OS and Zone Alarm application (Extreme, Internet Security, etc) and Zone Alarm version. *Zone Alarm forum: http://forums.zonelabs.com/index.php '''If this reply solves your problem, please click "Solved It" next to this reply when <u>signed-in</u> to the forum.''' ------------------------- Not related to your question, but... You may need to update some plug-ins. Check your plug-ins and update as necessary: *Plug-in check --> http://www.mozilla.org/en-US/plugincheck/ *Adobe Shockwave for Director Netscape plug-in: [https://support.mozilla.com/en-US/kb/Using%20the%20Shockwave%20plugin%20with%20Firefox#w_installing-shockwave Installing ('''''or Updating''''') the Shockwave plugin with Firefox] *Adobe PDF Plug-In For Firefox and Netscape: [https://support.mozilla.com/en-US/kb/Using%20the%20Adobe%20Reader%20plugin%20with%20Firefox#w_installing-and-updating-adobe-reader Installing/Updating Adobe Reader in Firefox] *'''''Shockwave Flash''''' (Adobe Flash or Flash): [https://support.mozilla.com/en-US/kb/Managing%20the%20Flash%20plugin#w_updating-flash Updating Flash in Firefox] *'''''Next Generation Java Plug-in for Mozilla browsers''''': [https://support.mozilla.com/en-US/kb/Using%20the%20Java%20plugin%20with%20Firefox#w_installing-or-updating-java Installing or Updating Java in Firefox]

I downloaded ZoneAlarm 10.1.079 from a link in the Zonealarm forum - problem now gone away

I am having this problem also, but I don't run Zone Alarm and don't have a ZoneAlarm toolbar.