For those planning on attending the Olympic Torch relay (or just plain trying to get to work), here's the latest from 511 Transit:
"Wednesday, April 9, 2008: Due to the Olympic Torch Relay scheduled at 1:00pm in San Francisco, MUNI has suspended regular Cable Car service on all three routes between 11:00am and 4:00pm. Motor coach shuttles will be provided along the Cable Car routes.
F-Market service will be suspended between Fisherman's Wharf and Van Ness Avenue. No shuttles will be provided. Muni Metro service between Embarcadero Station and 4th and King Streets will be suspended from 12 noon until 4:00pm. Muni Metro customers wishing to connect with CALTRAIN must exit Muni Metro at the Powell Street Station and use the 30-Stockon or 45-Union bus lines to access CALTRAIN."
More details on specific transit lines here. --Janine Kahn