#24 - Aug. 28, 2014, midnight
Okay I synced up with our Server Engineering team. They've been keeping a close eye on Beta stability throughout the day. The restarts some of you have mentioned are related to that; it gets a bit technical but basically they're making some changes behind the scenes to resolve issues and the restarts are a needed part of that.
Sorry for the stability issues, but rest assured people far smarter than me are looking into it already.