as far as i know wgt was under maintenance today therefore you may have experienced some slowness due to the maintenance tech's working on whatever they were doing.
i run a hosting company, have done for the last 8 years and it's like this.....if i take a server offline i get complaints....if i leave it online while the techs carry out their work, the server may run slow and i get complaints...
it's a no win situation i'm afraid.
given the size of this site, wgt will be hosted on a few servers and will have top server admins to carry out all the necessary stuff like server cluster load balancing, database sharing etc
tbe