I am having Mozilla firefox. Recently I was trying to upgrade to firefox 6. But unfortunately I couldn’t. When I try to click on the apply update from the help option (about firefox window), the new update gets downloaded and then I restarted the browser. After restarting I got this message "The update could not be installed. Please make sure that no other instances of Firefox is running and retry” I checked whether any other firefox function is running in the background or not. There wasn’t any FF application running. Then I tried restarting my system but nothing happened. I don’t know what the problem is. Kindly help me regarding this issue.
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