AFAIK, an admin should have no limits...
I'm not sure what AFAIK means, though the reason why I asked about it was that last time I ran the demo control panel set from your server, it only allowed me to delete the last post and even then within a restricted time period after which I could not delete even as an admin .....perhaps I missed out on something --- not sure, hmmm confused....
but from what you are saying that the full version should have no restrictions