Be ready today at 5pm PDT for USA (Tuesday 06/07/2011) just in case. Hope Turbine has IPV6 addresses Re-registered if not it might be time to look into it
There might be some internet problems. It will go for about 24 hrs for now.
Heres some info on this Geeky Day:
World IPv6 Day looms: what might break (and how to fix it)
Edit: sorry it's today for the USA