My first thought was, new seller. Then I looked at your feedback number, no way are you a new seller! It is normal for new sellers to have to wait 24 hours for their listings to appear (why, I don't know). There have been some glitches on the site recently, it's possible this is just another. Instead of one day auctions, maybe try 3 day auctions until whatever glitch is rectified? 

The other option is to contact ebay via the live chat option and see if they can shed some light.