Call of Duty: World at War Message Board  

Since 'Day 1', Treyarch has been having some issues with their WaW Master Server. So, when you log in, you can easily see all your Rank/Weapons/Challenges data- lost.

Imagine you just reached Level 65 (even in prestige) and the next day you lost the data. Would you spend the same amount of time just to reach it again?

How to make your own profile backup in order to prevent this?

One click on this .bat file automatically places a backup of your COD World at War player profile into your Documents folder in case you lose it or have to re-install the game.

There is one for XP and one for Vista. Both are in the zip. Read Me with instructions included.

Download: Link

Thanks to viperman551 for posting these batch files @ callofduty.com