I updated to the RC2 this morning and I've noticed something insanely annoying: When I try to copy over a large block of text, another box opens up and asks me to copy it into there. Once I do, it just shows up nowhere near where I wanted to put it and then I have to reformat.
The first post after the update it didn't happen, as I did that post in the HTML viewer, but the second post did it and it was aggravating.
The other issue was the links box. The 'http://' is already in there, but I usually just paste over that. I couldn't get my post online for 2 hours because for whatever reason, the 'http://' was added again in front of all my links, therefore making them bad links.