About every two weeks Stack Overflow won't load. The browser window is plain white and nothing happens.
Reload, forced reload, clear browser cache, restart browser does not help.
If I delete all cookies that start with stackoverflow, the page loads (but it says I am a new user and I have to login again). I haven't tried yet if I really have to clear all Stack Overflow cookies or a subset is enough.
stackoverflow.com is affected, none of the three sisters (I always load them in four tabs). I think it started around beginning of August but I'm not 100% sure.
As I use a rather exotic browser (Chromium on Ubuntu Karmic Koala) and I could not reproduce it on Firefox. I guess this will not be further investigated, but I would be interested if there are other Chrome or Chromium (or even Safari) users out there that have the same issues.
EDIT: Just for the record, since 22. December 2009 it also happens for serverfault, but not superuser or meta.