Earlier today (March 23, 2011) I updated my Firefox software after being alerted to the availability of the update. At 4:23 PM EDT my Norton Internet Security software detected the security Threat "WS.Reputation.1" while I was using my Firefox browser. The Norton software instructed me to restart my computer to complete the quarantine of the following Firefox software modules containing the security threat: xpcom.dll, nssdbm3.dll, nssckbi.dll, smime3.dll, nss3.dll, ssl3.dll, nssvtil3.dll, mozcppl9.dll, mozcrtl9.dll, brwsrcmp.dll, freebl3.dll, plds4.dll, browserdirprovider.dll, nspr4.dll, xul.dll, sqlite3.dll, js3250.dll, plc4.dll, softokn3.dll. I am unable to use my Firefox browser with these files quarantined. Thank you.