Sorry for not breaking the obvious fact sooner. Everybody is having ocasional problems with notifications page. It just loads blank too often. It's certain memory overusage issue.
We've addressed this problems in the new design/layout that is coming soon. There have been major delays with it and I'm really sorry. Final touches/bugs fixes are being done as we speak.
I'm going to post a new blog for updates/work flow over the new design next.
Thanks for your patience guys!