The two in the morning thing could be the nightly backup routine. I am not sure exactly what time it happens, I can check with the company that manages it though. If I understand it correctly, it has to shut down the database to create a copy, then the copy is backed up to a third party location.
I did have to restrict editing posts to 24 hours due to a rash of vandalism recently. I do not like putting on such restrictions, even when just temporary, but from time to time CoinTalk has experienced vandalism and spamming which takes advantage of openings such as this and it is extremely difficult and time consuming to combat these types of things.
I also have a backlog of about three dozen private messages to get to, as well as over a hundred emails I need to reply to, as a result of getting behind with things due to personal issues (see the General Discussion section for more info on that). So I am a bit under water right now and trying to put the critical issues first but eventually will get caught up again. I do appreciate and encourage all feedback about whats wrong with CoinTalk, and I appreciate even more your patience with me while I figure out how to deal with it.