Download:
http://www.bitdefender.com/world/Downloads/browseEvaluationVersion/2/80
Install:
sudo sh BitDefender-Antivirus-Scanner-7.6-4.linux-gcc4x.i586.deb.run
Run:
Applications menu> System Tools> BitDefender Scanner
Type the license key
http://www.bitdefender.com/site/Products/ScannerLicense/
Update & Scan
Remove:
sudo apt-get purge bitdefender-scanner bitdefender-scanner-gui