Well okay. I just knew that Vue consume memory a lot. Does opengl makes any difference and without opengl enabled in vue 4? I think the most i will update to 768MB DDR-400. I only had 2memory slots and i do not want to waste my 256MB RAM. But you say i cannot multitask, then what if i want to learn vue 4 with some tutorials, then how? With your computer specs, had you ever seen the shutdown problem? Is it common to your machine too? Thanks.