The only way to see if there is a post as answer on your own post is to check the sub forum where you put your post or remember the counter values in the Forum main page. It is only when someone create a new post the name is updated in the Forum main page. I do get the notis mail but I am not always at my home computer where the mail is delivered.
If the Forum main page was updated everytime a post is added by anyone anywhere, it would save a lot of time. Perhaps a cookie with the counter values can be used to indicate when to show a "new post" image.
We currently do not have this (currently we show the word "new" next to new posts only in the sub forums and not in the main forum page), although thank you for the suggestion. I will be sure to forward it to the appropriate department for consideration.