Other (older) Blogger/Blogspot blogs may some difficulty switching over to the new Blogger (which integrates with your GMail account), because those older blogs may have thousands of posts. There are other reasons why you can't switch to Blogger Beta.
I'm unable to edit the "Links" element of the sidebar, though. Perhaps it will work with IE rather than with Firefox.
Gusto Mo Bang Kumita Sa Internet
Nang Pa-Facebook, Facebook Lamang?
Click Here Now!