While doing the restart to complete installation of 10.5.2 my power went out and things arent working to well. My iMac rebooted fine but now it shows that my system is up to date but none of the new features are working and seems they didnt install correctly because of the outage. The new stacks wont work as well as the Time machine menu bar option. Even with it enabled it does not appear and stacks wont give me the option to do a list view. How can i download and install the latest update again. Please help.