I got Leopard on release day and have had it connected to an external drive and time machine running since, with no problems. However, a few days ago I had to reinstall OSX and set everything up again. Now when I open time machine I can still go back to a time prior to reinstalling OSX but some things I cannot restore. For example I can only restore my desktop items from since I reinstalled OSX. However if I click my Macbook icon in the finder I can restore back until January. What has caused this and is there a way to delete everything from Time machine and start fresh from now? Thanks guys.