I'm not sure if this is unique to Lion or having an SSD, but I was exploring in Disk Utility and found a section called "Power on Hours" and couldn't figure out what number base it was. Any ideas? It would be interesting to find out how many hours the SSD has been running. Edit: My sister's MacBook Pro has a regular hard drive and Snow Leopard and this doesn't exist in her Disk Utility. So I guess it's unique to Lion.