I had just converted your status from Probie to Newbie.
How long a person stays a "probie" depends on a lot of things, including posting style and number of posts. Keep in mind that there are only a few mods reading through and approving posts to a much larger number of members/probies, so patience is really appreciated.
I, myself, generally approve posts en masse once or twice a day. Usually early in the afternoon depending on if I have time and then later at night. Patience is a key with probies.