Antivirus Antispyware 2011 is a rogue security product in the Privacy Center family that uses aggressive, deceptive advertising through fake alert pop-ups, browser and desktop hijackings, blocking the running of other applications used for the fake alert pop-ups to scare users into thinking they are infected to goad them into to purchase the fake security application.
This is where you'll find it:
%APPDATA%\Antivirus Antispyware 2011
%PROGRAMS%\Antivirus Antispyware 2011
%APPDATA%\Antivirus Antispyware 2011\AntiVirus AntiSpyware.exe
%APPDATA%\Antivirus Antispyware 2011\SecurityManager.exe
If Antivirus Antispyware 2011 has infected your system, you should remove it immediately.
Important Warning: It is possible to manually remove this fake security program, however, to ensure no risk of damage to the infected computer, it is advisable to use an Antivirus/Antispyware application like Vipre.