The Launch and Urgent animations for the launcher icons in my Unity sidebar have stopped working - I have restored the defaults. I have Unity tweak and Compiz Unity plugin (both in sync with each other).
I thought I could handle missing a tiny thing like this, but not knowing if an application is still loading or I've just not clicked the icon properly is incredibly annoying.
If it makes an difference, I did install Ubuntu server first and then Ubuntu Desktop on top of it.
I have an ATI graphics card and it's working fine with the community drivers, 2d and 3d acceleration, and I have compiz with some silly interface things (wobbly windows - love that one) turned on.