[typo] Problems upgrading to Typo 4.1.1

[Eamon Ford]

Hi everybody,
I downloaded and installed the latest version, 4.1.1, via the gem.  
But now when I go to my Typo blog, the CSS doesn't work and it won't  
accept my username and password to get into the admin panel. Also, it  
shows all my old posts, but when I look in the database (with a MySQL  
frontend), there are a bunch sample posts. Weird. Can anyone help me  
out?

Thanks in advance.