Me thinks the TV trains are going to be busy in during those weeks in 2012
I hope
FGW▸ are taking it seriously and not just hoping they can get by with the usual service and the odd extra carriage here and there. A total cancellation of any engineering works at or near London (or the other major venues) during the Olympics and all local services between Reading and Paddington (as far as is possible) running as 6-car trains off-peak as a bare minimum.
As far as I know there will be a total embargo on all disruptive maintenance on all routes in the southeast during the Olympics and para Olympics. The 165's will be the best sets to use because embarkation and disembarkation is quicker than Mk3's 6 car sets might cope just, the main service ort to be London, Slough, Maidenhead, Reading 15 every min shuttle on the Mains leaving the local services for the locals to get to the rowing if they so wish