HELP! Random lag spikes

[HELP! Random lag spikes]

I dont understand it, why am i getting freezes every 10 min? Normal fps are 30-40 but when it freezes it goes down to 10-15. But ive seen videos in internet and it only happens to me... Or a few persons.

[HELP! Random lag spikes]

I have the same problem, but i think it can be because of the connection, because a lot of times i see a yellow icon on the screen(bad conection) but im at 40 ping

[Arma II (high textures)]

Ok i bought arma II, it worths it

[Arma II (high textures)]

I have arma II free and arrowhead bought, so my question is... Can i import the hd textures to arma 2 free, or if i download arma 2 would i be able to play?

[Play arma 2 in two pc]

So i have to buy the game twice??

[Play arma 2 in two pc]

Can anyone answer me these questions?

-DayZ is played in a official server? (i don't know how is the arma 2 online, so if this question makes no sense just ignore it)

-If i buy Arma 2 and the DLC necessary to play DayZ, can i install it in two different PCs?

-If i installed it in two PCs with the same steam account, would i be able to play DayZ at the same time?

-If i install Arma 2.....etc. and once a installed it with a steam account, can i log in with a different account and play online with the one that has the game bought?

Don't think im trying to hack or things like that the game, im just wanting to know that if i buy arma 2 and the DLC once, would i be able to play DayZ with my brother together?

I hope there is a way to play DayZ with my brother without buying the game twice....

Thank you!