Господа, у меня проблема: когда пытаюсь пропатчить арму 2 до версии 103718, нифига не выходит, пишет / Day Z :: проблема :: вопрос :: помогите

Тогда вот:
Check your client RPT file. On Windows 7 it should be located here: "C:\Users\"YourUserName"\AppData\Local\ArmA 2 OA" It may give you a clue as to why you are being kicked.

Also, you may have already done this, but before you install any Arma patches you need to load the game from Steam and go all the way into the main Arma menu that has the music and such. That will let Steam download and write your game CD key to the Windows registry. That usually helps. You will likely still get the Wrong CD Key error, but it will let you install the patch successfully.