Just made the upgrade from 3.2 and it went very smoothly! Only one issue I can't seem to figure out.
I had made some edits to sociable.css to make the icons bigger, spaced out more, etc... but these edits are not showing up in 3.4.1. They did show up in 3.2. Right now sociable is appearing as it does unedited.
I know it says not to apply CSS in ATO for sociable, but I was using it before and it worked perfectly. If there is a way to get around this and apply the CSS, that would be really cool.