Why do I keep getting this when I try to post?

[funkydrummer]

"Thank you for posting! Your post will not be visible until a moderator has approved it for posting. You will now be taken back to the forum. If you opted to post a poll, you will now be allowed to do so."

This only just started happening, why? How long will it take before my posts show up?

[admin]

When posts are flagged for moderator approval it can take anywhere from a few minutes to a few hours for the moderators to handle the request.