I always used to be "following" a thread automatically if I had replied in it (or started it).  Lately, however, I have to click "follow" even if I've already written something in the thread, or I don't get notifications.  Any insight? I've tried to find someplace in my profile where I choose "always automatically follow threads I participate in" or something similar... but haven't found it.  Probably being very lame, but would appreciate it if someone can shed light.