Yesterday morning Geir found and fixed a bug where a memory leak was happening when FITS images were being converted to JPG for display. We don't know for sure that this is related to the recent freezes, but we're hopeful. So far we haven't had to restart the server. I also setup some cloud monitoring tools so hopefully we will be notified of a freeze within a half hour of it occuring. If you notice anything strange happening in VPhot, please post here or e-mail firstname.lastname@example.org. We'll post updates to this thread as we get them.