Hey guys, i am trying to get wifi password, but when i get to discover the password with a word list my cpu's usage is 100%. After 5 minutes the system shutdown, but shows the screen informing that the system is closing.. I think that this is a security tool on BackTrack 5 - if the temperature of CPU is constantly high, the system will shutdown, is there a way to turn off this preference? like, the only way that the system could be turned off is suddenly?

I don't know if you understood me but at least i gave i try..

Obs: i don't speak english very well because i'm still learning.