Anyone know what would casue strange behavior. I just brought me a motherboard. The Abit KT7A-RAID about mouth ago and thigs are running smooth and solid. My question is on PC memory when I pair up 2 Micron PC133 256mb cas 2 type for a total of 512mb on both memory bank they work just find and run rock solid in Windows 98,ME or NT 2000. But when i install another Micron PC133 cas 2 on the last memory bank and fill all 3 banks up. And power up my computer it post 768 and boot's into Windows 98 normaly but after the OS sit. It start to behave strangely and programs keep telling me that applications that you are trying to run does't have enough memory to load it. That goes for Windows 2000 as well it will load up half way and give me the blue screen. I was reading the new's group about this problem heard other people having the same problem as well. Although I never paid to much attention to it until i decided to buy the board and now i struck with it. Is there any thing that i have to do in the BIOS conforgation on memory setup that could fix this glitch? Someone told that I have to get ECC memory for this motherboard.