i am also thinking about try and learn linux, because after the end of WinXP, i may make Linux and Win7 dual boot, still trying some linux distro's, very little knowledge about linux though...
ESET NOD32 Antivirus v4.2 on Win7 x64 (2x) License expiring on the 26th Jan.
ESET NOD32 Antivirus v4.2 on Win8 x64 (1x) License expiring on the 26th Jan.
(There are 3 of us. Not just me.)