In this RAM price heaven, it's tempting to pick up another stick for current or future use. Currently I have 2 X 128 = 256 MB. I was advised that I can't have too much memory for video editing. So, I plan to fill up one last memory slot available. I have seen a lot of people who have 128 or 256 or 512 MB system memory, but not many with 3 X 128 = 384 MB. Is there any technical reason for that? If so, does it mean I need to pick up 256MB rather than 128 MB? Thanks.