Ubuntu 10.10 is in early alpha and is not meant for every day use. The 10.10
means that it comes out in October of 2010, still 4 months away. It is buggy
because they have not worked out the bugs yet. Alphas and Betas are meant
for users who wish to test it out and report bugs so that they can be
squashed.

Your best bet is to re-install Ubuntu 10.04 and stick with it until 10.10 is
ready for everyday use. Even then only people who want to upgrade should.
There is three years of support for 10.04 and only 18 months for 10.10.