Ah, yes, those links do work, thanks! I wasn't trying to submit anything, though, just reporting the issue.Hi Bacterius,
Thanks for making a thread about this, I too have this problem. But if you want to read the POTW problems you can go to the homepage and click on sub-forums under the "Problem of the Week" category. The link you mentioned is the one that corresponds to the P.O.T.W. tab in the main navigation bar. Hopefully the admins will resolve the issue soon.