The reason why I posted about this is because this is the first time that I've experienced this problem and that it took several hours before I was able to login.

Thank you for taking time to drop by and take time to shed light into the matter. :)

That error you've seen is one that only occasionally appears in production; one of our application servers didn't quite come back properly from a recent minor code update. That server has since been given a kick in the pants and the error shouldn't recur. Please note that feed availability, and feed statistics tracking, should not have been affected at any time, and our general availability to the outside world has been high:

http://grabperf.org/homepage.p.....r&amp…

Thanks for posting about what you noticed; we'll keep working to ensure the reliability you expect from an always-on service like ours.

@jhay – Have you tried logging in? I still can't login to it, still shows that Apache Tomcat error page.

Yeah, I couldn't access your site earlier. It's good that it's back online now. :)