I've read many posts which talk about switching to classic mode, as if it's real easy and it probably is for some people. I've been messing with this for about a week now. On my computer there is no log out option and there is no classic option appearing in the log in Screen. The log in screen in Ubuntu appears to behave differently on some peoples computers. Here's how I figured out how to log in as classic mode.
1. Press Alt + F2 and enter the following.
2. The log out window should pop up. Then Log out.
3. In oder to get the options on my computer to show up, I have to hit enter a few times. So hit enter a couple of times. Then suddenly the options appear in the bottom panel.
4. Select Classic mode.
5. Then log back in.
Every thing should be there, just as it was in the old Ubuntu, two panels, system menus, and the ability to add applets to the panels and every thing you used to have. I assure you it's all there, it's just hard to figure out how to switch to it.
Check out the deb packages available for download at http://www.dotdeb.com