i have two 1 gb sticks in my mac, and lately, it's been only picking up 1 gb of memory on restarts, and i don't know how to fix it anymore. i thought a pram restart would do the trick, but it's not working anymore. in addition, i've been having random restarts from time to time and it's a pain trying to get back to full strength. and plus, i think safari is a memory sucker (true) and it's not helping things. any advice on how to get my computer to detect both memory sticks and stop the random restarting? thanks. (btw, i have a 2.0 ghz c2d late 2006 macbook).