Official Gmail Blog: Tip: Set Gmail as your default email client in Firefox 3 - http://gmailblog.blogspot.com/2008...
        
        
          Jul 16, 2008
          
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                Srikar
              
            
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              Instructions didn't quite work, but I managed to find the bug at: http://digiwanderlust.blogspot.com/2008... - needed to set gecko.handlerService.allowRegisterFromDifferentHost to true in about:config
               - Arvind Sundararajan