Hello, I am an Apple user for the last 7 years, and have been happy with every single one of products, except the new Aluminum MacBooks. I purchased 4 GB ram, G-Skill, and the MacBook freezes ALL the time after 5 min - 1 hour use. I had tested the ram, and they're good. So, after reading around, found that the problem is MacBook has 4 GB issues for most of the customers, and until Apple releases a fix, using one of the 2GB chips, to have 3 Gb will do the job. YES, 3 GB works, 85% of the time. But even with 3GB of ram, there are occasional system freezes! Anyone having the same with 3GB ram, too? When will Apple release the RAM fix!?