As of late, I've been experiencing typing lag in Messages under Mavericks... Anyone else? Messages seems to crash a lot as well. Very slow. Most other things under Mavericks seems to be fine... A few crashing issues with Mail and that seems to be about it. Can I redownload Mavericks and install it on top of the current Mavericks? Would that fix any file issues? Or would I have to do a fresh install of the OS? See my specs in signature.