I put a lot of this down to the het-grid changes to grid architecture (breaking the single monolithic grid into related subsystems that scale better). A few months ago I was jumping for joy with how well grid changes were rolling out, as I expected these kind of issues to pop up sooner.

The bad thing is they're replacing their old problems with new ones. The good thing is that the old problems were such as they were built broken, the new problems are built solvable (for the most part). Even so it's not surprising that they occasionally run into unforseen issues as they tweak this server code, as the gochas are predominantly new and untested instead of old and familiar.

Just my two cents :P