There's two developers in our mixed group, of which I am one. The other makes a moderate amount more than me. However, he is much more senior than me, and to be honest, a better coder too, so it's understandable. My gripe is that I think we're both underpayed and I think we both deserve a healthy raise. I wish he was motivated to ask for one instead of just taking the yearly cost-of-living increases so that I might ask for one myself. And that annoys me greatly sometimes. I have yet to be hostile though. :)