I have Nod32 on several of my home computers. On one computer, the version is listed as 220.127.116.11. On another, it is listed as 18.104.22.168. When available version is checked on both of these computers, the different versions are verified as most recently available. Can this be correct? The computer checked with 22.214.171.124 is using Vista operating system. The 126.96.36.199 is using Windows 7. Thanks.