Hi guys, this evening I installed a new stick of ram into my mid 2010 mac mini, replacing one of the original 1gb sticks with a new 2gb one. The computer starts up great and I can see the performance increase. But then the computer seems to freeze after a little while I have tried rember memory scan and it says all is good. Now iv taken it out and put the original stick back and all seems fine. Any ideas or is it just a dud stick? Thanks