AntiVir (Little Red Umbrella) is giving away free keys again; this time they are partnering with PC Advisor to give away a 6-month license of the paid version of Avira Premium Security Suite.
The suite includes AntiVir (antivirus and anti-trojan), AntiSpam (anti-spam), AntiRootkit (Rootkit monitoring), Firewall (firewall), etc. All the necessary functions are there, and the size is also quite compact.