System Specs Processor: AMD Phenom II X6 1100T Memory: 2x 4gigs Gskill 1600 Video Card: AMD Radeon HD 6870 Monitor: 2x Asus Mk241H @1920x1200 @60Hz w\Extended Desktop Sound Card: X-Fi Titanium Fatal1ty Pro , On-board RealtekHD used for Vent Operating System: Windows 7 Ultimate 64-bit SP1 Motherboard: MSI 890FX-GD70 PSU: PC P&C Quad750 B(b4 ocz buyout) Now onto the Problem. Within 30minutes to about 2 hours(depending on game) of running GPU-Z 0.5.3 My System will Hard lock and require a hard boot. When this happens i also get a hissing noise from my speakers because the sound is just repeating. Now i dind't have this problem until i d/l the new build of GPU-Z the previous build i had was like 5.1 or 5.2 which did not caus ethis problem(however stutter seems to always be there in every build i use, however i stoped using for awhile and jumped straight to 0.5.3 from my last ) but i was using a 5770 at that time i belive. I can play to my hearts content without GPU-Z ruining but as soon as i turn it on or any of us for that matter just a matter of time. Now i'm also running Several other programs in the background/ on my second screem that i watch while playing. Ventrillo Xfire Raptr Taskmanager NetLimiter2 Coretemp 5 Desktop Gadgets: Wallpaper, Time, System info, Network Monitor, Drive monitor. Normaly have steam Open Several Webpages open(ie and or firefox) if this may help any but dun any of these should be a problem. I have 2 Other Friends who have the same issue, one is almost exact same setup as me but with dual 6970's(tested with crossfire on and off same thing) and other using an intel with a 5870.(i have several others i could ask to test to with almsot exact setups as me) They both run their own assorment of programs too. We also all encounter the stutter issue when running GPU-Z after awhile, while being in a game(which has been around as long as i can remmember, starting with my 3870 crossfire non crossfire, Several Different 4/5 series cards and both of my 6850/6870 cards). only way to fix this problem is to close GPU-Z when it starts happening and just not use while gaming.