well, this idea is not new as it has been toying around for some time. But now, thanks to the russians, we now have a cracking / brute force software that uses gpu to reduce the time to reveal the password!!!

source : http://cyberinsecure.com/new-tool-for-graphics-cards-threaten-wireless-networks-encryption/

Russian firm ElcomSoft has applied GPU acceleration technology to a new password recovery tool that allows PCs or servers running supported NVIDIA video cards to break Wi-Fi encryption up to 100 times faster than is possible by using conventional microprocessors. Recovery times for Wi-Fi keys are increased by a factor between 10 to 15 in the use of Elcomsoft Distributed Password Recovery in combination with a regular laptop featuring NVIDIA GeForce 8800M or 9800M series GPUs. By running the same software on a desktop with two or more NVIDIA GTX 280 boards installed, this figure increases to a factor of 100.

Only works for Nvidia GPU only... Ati Fan boys have to wait...