You get used to it after awhile. It’s more of a slight nuisance than anything else. I just wanted to make sure that people don’t think that they will have the same issue when they’re using BuddyPress.
I’m sure it will be difficult to track down. Since this site is using multiple servers, it could be caused by anyone of the machines, perhaps even an issue with HyperDB–although I have not seen any reports on that.