please follow the link provided by yttrium and see if you have the same problem.
mine is that the browser closes immediately after clicking on the first link about "Screen shot"
problem reproduced 2 times.
Using Google Chrome.. but I don't think this is the point because I am using it to browse all the forums and all of the other posts normally. it is the one I am using always.
Alright, now it is about 2:50 AM Tuesday 4-16. Beijing time, and I just ran into the same problem.
Note that to see those screenshots you MUST be logged in to the forums, clicking on them and not being logged in will open a new tab and show the login screen, you might have a setting preventing that.