Missing Launcher

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I finally upgraded from 10.10 to 11.04.

My files are fine and most of my apps work and are still configured properly, but I have no launcher or dashboard, no access to the main menus or clock or any of that very useful stuff for troubleshooting . I'm pretty much of a newbie on linux so I'm not sure where to start with troubleshooting this.

There's something wrong with the windows finder equivalent. Is that called Unity? I found several threads that lead me to restart unity in the terminal window, but that fails. I also can't do simple things like alt tab between applications.

What are my best options? Can I reinstall 11.04 without it doing a clean install? Is there a way to roll back to 10.10. I've been looking through this help forum for hours and can't find these basic installation questions discussed.

Thanks

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[raja.genupula]

Please Dont bump so early .

while coming to your issue.
have you tried these things


unity --reset

unity --replace

or

enable unity checkbox in ccsm

to get ccsm menu , type ccsm in terminal
check all those things.


All the best.

[Frogs Hair]

When you get your panels working run the following and logout and in . There is a trouble shooting guide at the link.
sudo apt-get install indicator-datetime
sudo apt-get install indicator-weatherhttp://www.tuxgarage.com/2011/04/missing-top-and-side-panels-in-unity.html

[simontroll]

Thank you so much for the suggestions. I didn't get to try them, because CTRL+ALT+t no longer seemed to work to bring up the terminal window. Being the newb that I am I couldn't find another way to launch it.

However, I found a workaround if anyone else gets stuck.

I found then launched the Ubuntu Software Installer and discovered and installed the Unity 2D option there which worked like a charm. I don't remember what GPU I have in there, but this is a pretty new machine.

[Frogs Hair]

Find GPU
lspci