hey sweety, what can happen is someone listens and then gets distracted from the computer (darned life can do that at times) by the time they come back with the intention of writing a comment (and they do), the inactivity for the prolonged period of time has caused the page to time out.
Consequently when the person submits their comment, instead of commenting taking them to your profile as it does with a live page, it will take them straight back to the front page of subs. Now some folks will notice this and realise what has happened but most will not. You will get notification that you have a new comment but it wont show
All you can do is imagine the lovely comment someone has left you...and I know it would never be anything but super cos you deserve super