Well, I've recently set up a broad band connection on my 360 and started trying to get somewhere on the leader boards. But I noticed I never seemed to place, even though my score was higher than some of them... Is there something that could be wrong with my profile? Or is this because I only have a silver account?

it's because you only have a silver account. i believe BK only lets you place on the leaderboards if you have a gold account (lame).

yeah, it's very lame indeed, but that's the reason. i didn't see my scores until i upgraded to gold.