Hi, noob here. I have a MacBook with OS X 10.5 and I was looking at some of the updates I had installed and wanted to delete some that were irrelevant and that I shouldn't have installed in the first place. Somehow I deleted everything in the "Installed Updates" list, I know they are still on the computer because when I check for updates nothing new shows up. Is there any way to repopulate this list with the updates I have installed and is there anyway to remove the ones that I downloaded too hastily or should I just carry on since it is not a major issue? Of course I did not have Time Machine up and running yet. Thanks for your help.