Android :: Layout_marginBottom Doesn't Seem To Work Properly In 2.2 - Froyo

I have this ImageView block inside a Relative layout:

CODE:.................

This draws the image right where it would be expected in both normal and high density resolution screens on Android 1.6 however on 2.2 it seems to ignore the layout_marginBottom and always draw the image aligned all the way at the bottom. Has anyone seen this before, and if so do you know a fix?

Edit 1:

It sits inside a RelativeLayout declared thusly:

CODE:...........

Edit 2:

Here's the full layout code:

CODE:................