This question is a two parter.
First, for some reason I got a +100 rep boost on all my accounts because of math.stackexchange despite the fact that My accounts have been associated for weeks without the rep boost (except for physics during the private beta). Is this a new decision?
Second, If it is intentional, I assume that getting 100 rep for associating my math.stackexchange account with my math.stackexchange account is a bug. Sorry that I couldn't grab a screen shot before clearing the notice but I had a banner that said "+100 Rep for associating Mathematics with Mathematics" or something similiar.