Stock Bionic here. Ever since the JB update, if I opened my text messaging for any reason, I'd immediately get the little text messaging notification appearing in my status bar (just the visual no audio), in the past, this was something that only happened when I actually received a new message, along with the audio alert, (before JB). This was annoying me and after a while, I unchecked something about notifications that I had the option to do so only from the notification bar itself and I can't seem to get to that "menu" now that my text alerts are no longer appearing there. Since then, I have not been getting audio notification or the status bar icon notification either, just a large text that appears on the screen without sound or status bar activating. I use Handcent. I have been going through all the settings that I can with no luck. I tried to "reset" my handcent settings to default values too, didn't work.
I'll try reinstalling handcent if no one has an easier solution. Factory reset is not an option, as in I won't do it for this alone.