ok got a question for all of you. Just wondering where I can get some memory thats affordable for a 2006/2007 macbook. I am using 512 mb per slot. so =1gb but not enough. It has the spinning wheel alot when im on safari and skype. and It won't let me install like a stuffit rar extraction program because I think of memory use. So just wondering where I can get some. Also wondering if it's low memory the cause of the issues when it comes to the spinning wheel. Let me know and thanks!