I recently purchased 8GB of new RAM  for my main computer, and saw memtest 4.0 might be a good tool to test the quality of the RAM. I ran the utility for a little over 18 hours, and then manually stopped it. If I'm reading the report right, it said there were approximately 1560832 errors. See screenshot.
This means bad RAM right? Can I tell from the report which slot, or do I need to run the test one by one for each of the 4 DIMMs?
 G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory Model F2-8500CL5D-4GBPK - Retail