Can't replicate the slowness here.
Virtually identical result from Flash.
linx-gw2.router.ntli.net doesn't actually exist. Must be old DNS or some weirdness from TBB's DNS, the actual device is telc-ic-1.network.virginmedia.net and is most certainly not a 'back up'. VM run their LINX ports more than hot enough to not have the luxury of ports as backup links.