Initially, Avast Secure Browser was bundled with paid versions of Avast Antivirus. However, Norton AntiVirus 2009 Classic does not include spyware or adware detection. Norton AntiVirus 2007 will not install alongside ZoneAlarm. Norton AntiVirus and Norton Internet Security are the lightest suites available. The user must uninstall both Norton AntiVirus and the LiveUpdate component manually. Alwil rebuffed acquisition offers by McAfee, who was licensing the Avast antivirus engine. Symantec's Norton Group launched Norton AntiVirus 1.0 (NAV) for PC and compatible computers. It provides a license for both Norton AntiVirus 11 with Norton AntiVirus 2009. The software lacks an antivirus and personal firewall. BlueStacks clashes with the BitDefender antivirus software. Symantec's consumer antivirus and data management utilities are still marketed under the Norton name. CESM manages the distribution and updates of antivirus and firewall software. On July 25, 2006, Symantec released a faulty update for Norton AntiVirus 2006 users. Two variations on Norton AntiVirus 2009 are also marketed by Symantec. Norton AntiVirus 2009 was released on September 8, 2008.