I recently upgraded the RAM in my system. I originally had 1GB (512 x 2 DIMMS) and bought another 1GB (512 x 2 DIMMS) and installed it. After installing the new RAM, I noticed that my computer was actually running slower and less stable than with 1GB. My motherboard has a capacity of 4GB and is dual channel capable. Does anyone have any suggestions as to why this may be happening?