Does your UPS software have any logging capabilities? I know APC's PowerChute+ software logs everything it does. There would be an entry in it's logs saying it was doing a clean shutdown. The system logs may also have something about the time the system shutdown too. -- Brent L. Bates (UNIX Sys. Admin.) M.S. 912 Phone:(757) 865-1400, x204 NASA Langley Research Center FAX:(757) 865-8177 Hampton, Virginia 23681-0001 Email: B.L.BATES at larc.nasa.gov http://www.vigyan.com/~blbates/