Every time I use Drag&Drop (even with Bookmarks in Firefox or songs in Banshee) the unity side bar apears and often blocks the place where I want to drop it. Is there a way to fix this? EDIT: There is only one option for the launcher ( wether it appears when touching the side or the corner) but it doesn't solve the problem.
Don't know if you've solved this but I found it a bit annoying to. This may help for you or anyone else: http://ubuntuguide.net/how-to-change-unity-sidebar-launcher-auto-hide-behaviour-in-ubuntu-11-04
may work for 11.10