We've been dealing with a denial of service / DDoS attack against our web host (it does not appear to be targeted directly at us), and they are working to mitigate it. Right now we've got an all clear from them, but as it's not entirely under their control, there's still a chance for outages. We're trying to add a few things on our side both to 1) have additional backups when these things occur and 2) have some better communication as to what's happening so at least when things are out folks know why. Thanks for everyone's patience.