This is what I got from Ameren UE web site. Note the number 1299 only reflects the outage of my neighborhood. From what I heard from radio Ameren tries to restore majority of customers by this evening.
Outage start date/time: Saturday Jan 13, 2007 7:01 AM
Outage status: Order assigned to servicemen or crew
Cause of outage: Tree contact
Estimated restoration time: Tuesday Jan 16, 2007 3:15 PM
Number of customers out: 1299