At this point it is not clear the outage of gameserver and website plus forums were brought down by a DDOS. They say it was a maintenance ... but we know the kind of bullshit WarGaming EU swims in.
Due to maintenance work, the World of Tanks servers, community site, forum will be unavailable from 21:30 to 23:59 (Paris Time) on 19.01.2013.
The Wargaming Team wishes to apologise for any inconvenience this may cause.
Who the hell believes them anymore? I don't. Note the date of posting versus the presumed maintenance window.
From unconfirmed sources the DDOS was doe via the special battle chat because it is not moderated and unfiltered. The apparent reasons for the DDOS itself were the recent changes brought by the new rules and additions made to ClanWars.