I use Windows Vista in my computer and it takes almost 4 minutes to boot up and almost as long to shut down - I uninstalled Live OneCare and the computer booted up in 1 1/2 minutes and it shuts down at least as fast. I have a dual core processor and 4 GB of RAM. I re-downloaded the software and it now boots up very slowly once again. Does anyone have any suggestions before I delete it forever? Please help.