Alont

Hey guys, I am having some problems with ArmA. Every so often my game freezes up, and the buttons in the menus and map editor are very unresponsive. It takes me a good 4 or 5 clicks for them to actually work. My system specs: Intel Q6600 Asus Striker Extreme Nvidia 8800 GTX Corsair 4GB ram Two 150 GB HDD in raid 0 (the operating system and ArmA are installed in those) One 320 GB HDD. I have Vista home premium 32 bit version. Any help would be greatly appreciated!