Calling Computer Geeks, Linux question

I am wondering if any of my blog buds out there who knows anything about Linux Ubuntu can answer a question for me.

If someone has upgraded from Ubuntu 11.04 to the new 'buggie' Ubuntu 11.10 but 11.10 is not running right and is screwing up other programs, is it possible to get rid of the upgrade and roll it back to 11.04?

If so, how?

Thanks!