At this point, all of the major, previously-reported issues left over from our datacenter switch have been cleared up. If you experience any problems from Monday onward, please open a Support request with as much detail as possible, so we can look into it.
The previous issue with comment notification emails not being delivered should also now be resolved. If you continue to not receive comment emails please contact support.
So let's hope it's true. I certainly seem to be getting my comments through at the moment, as far as I can tell by comparing those that have arrived with the Recent Comments tool, which I know only shows me comments left in my journal, but... it's the first time in over a week that the two have tallied. So touching wood here and hoping.