There's a reason they shipped it with only 3GB. Where is that bug reported? Sorry can't find it today.
For now, you'll just get a nod from me that this was known to happen.
I just purchased 2 sticks of 2GB DDR2-800 Ram from FutureShop. Lexar is the brand. I'm running Windows Vista Home Premium 32bit on my Acer 6530g. It came preinstalled with 3GB of Ram (2+1) which have a DRAM frequency of 333 mhz and I decided I'd upgrade it. Each time I install both sticks of ram, my computer blue screens and restarts. However, if I install just one stick of either one, in either slot, it works fine. They both run at a DRAM frequency of 400mhz when installed on their own. I'd appreciate some help very much.