Just in case anyone is planning to take Amtrak in Southern California, here's some info from the Amtrak website:

Service Alert: Railroad Remains Closed North of Los Angeles — Pacific Surfliner & Coast Starlight Affected
September 13, 2008
4:30 p.m. PDT
An incident involving a Metrolink commuter train and a freight train near Chatsworth, California, has resulted in a temporary closure of the railroad route used by Amtrak, north of Los Angeles.
Amtrak extends condolences to those involved in the commuter train incident and has offered any available assistance.
Amtrak Pacific Surfliner Service trains, which ordinarily operate between San Luis Obispo and San Diego, and the Amtrak Coast Starlight, which ordinarily operates between Los Angeles and Seattle, are affected by this closure.
Pacific Surfliner Service and Related Thruway Motorcoaches
There will no service by Amtrak Pacific Surfliners and their connecting Thruway Motorcoach buses on September 14, between San Luis Obispo/Goleta and south to Los Angeles, pending restoration of the route. No alternate transportation is available.
Amtrak Pacific Surfliner and their connecting Thruway Motorcoaches between Los Angeles and San Diego will operate normally.
Coast Starlight, Trains 11 & 14
The Coast Starlight will originate and terminate in Santa Barbara on September 14, with alternate transportation provided between Santa Barbara and Los Angeles.
Amtrak regrets any inconvenience. This information is correct as of the above time and date. Information is subject to change as conditions warrant. Passengers are encouraged to call 800-USA-RAIL or visit Amtrak.com for schedule information and train status updates.