I've been trying to give my 06 2.66 MP a speed boost by adding some RAM and installing an SSD hard drive for system and apps. (That hard drive is a miracle. What a difference.) But I'm having hassles with ECC errors. I started out with just 3 GB of RAM, the original 512 chips, which are fine, and some 1GB OWC sticks I had put in in 2007. I noticed that one of the 1GB was generating ECC errors ... usually between 20 and 40 after the machine had been on a while, and always the one in the first slot. Since I was ordering more anyway, I called OWC on their lifetime warranty to get those replaced, which they sent me new ones for, and ordered two 2GB sticks to boost me up to 7 GB total. The 2 GB sticks were dead in the water, didn't register at all, even after cleaning the contacts with alcohol and a pencil eraser. They are sending me a new pair, should be here today. So I install the two old 1 GB sticks in the back slots, and put the two new 1GB sticks in the front slots. Both the new ones are generating ECC errors, too, and the first one has a whopping 200,000 + after being on for an hour. Second just has a handful. So, I'm batting .000 on OWC RAM ... how common is this? Is it worth replacing RAM if it's just generating a few errors here and there? It's getting a little ridiculous, now I have to send back those two 1G chips I just bought and why am I thinking that the next batch either won't work or generate errors as well? How typical is this experience? Any thoughts appreciated.