On Friday 11/23 I installed 2 1GB sticks from OWC ao now I'm up to 3GB total and everything worked fine until the next day I noticed 19 correctable errors showing up in the ram. I restarted my machine to clear the count, and ran rember and everything came back fine. Later that day I noticed 1 error again so I ran rember again this time with more passes and all tests again came back good. I have been trying to tax the memory by running extra programs and have been watching the memory temp and have never seen it above 160 F. Is this worth returning the ram for? I have read other threads and the only standard for errors I could find was 1 in 48 hrs, I am at now but what could have caused the first set of 19 after about 20hrs of operation? Now that I have seen only one in 20 some hrs does that mean I'm in the clear or does this seem like buggy ram I should return before it really takes a dive? I have the 2 1GB sticks on the first riser and the 2 512MB sticks on the second riser.