WordPress MU

I was simple customizing the WPMU installation for my site and now everything has gone weird. Not sure what I did, I think the last thing I did was press the "Import" button because I didn't know what it was for!

1) The default theme is gone and replaced with just text on a white background.

2) Most of the links cause 403 Forbidden error.

I think this has something to do with .htaccess because http://xblogspot.com/wp-newblog.php does not redirect to http://xblogspot.com/wp-inst/wp-newblog.php like it should.

Any ideas?

Ended up reinstalling WPMU and right away it worked fine. But still curious what this problem might have been..?

Don't know what happened, but by god I am avoiding imports now. hehe