I'm running Ubuntu 12.04 32bit on a dell netbook, and the icons are way too huge. I've tried clicking on the cog and logging in as "ubuntu" instead of "ubuntu 2d" but that doesn't work. what do i do?
You can use dconf from a terminal to write the settings.
Set it (replace ## with your preferred size):
dconf write /org/compiz/profiles/unity/plugins/unityshell/icon-size ##
Reset it to default:
dconf reset /org/compiz/profiles/unity/plugins/unityshell/icon-size
These, of course, only work if you have dconf installed, which you can do easily from the terminal:
sudo apt-get install dconf-tools
Hope this helps.