Remove Overlay Scrollbars in Oneiric
I’m not a fan of overlay scrollbars, and procedure that worked in Natty doesn’t work in Oneiric. To remove them, open a terminal and:
sudo apt-get remove overlay-scrollbar liboverlay-scrollbar3-0.2-0 liboverlay-scrollbar-0.2-0
Then, restart your computer (performing a logout only may not be enough).
To reactivate the overlay scrollbars, reinstall the packages:
sudo apt-get install overlay-scrollbar liboverlay-scrollbar3-0.2-0 liboverlay-scrollbar-0.2-0
And restart your computer.
Note some system updates will reinstall these and you’ll need to remove them again