I am running Windows Vista 64. AMD Phenom II x4 3.5 quad core processor. ASUS M4A785-M motherboard with 8 gigs of RAM. I am using ADOBE CS5 version of Premier. I have installed all the updates, but am not running version 5.5. The problem I am having is that during my project if I click on something it will freeze and then not ever go back to working. I have to close program and reopen it. But it keeps giving me problems. Any advice?