I am using the SmallBiz theme, so I'm wondering if that is the issue...
When I try to edit my posts, the Visual/Text editor button is greyed out. I can go back and forth from Visual to Text by going to my user profile and checking the box that allows or does not allow for visual editing.
That's one problem.
Now I can't add media to my posts. I click the add media button and nothing happens. I get nothing.
I know that I was able to add media before because I added an image to the membership page, so I know it used to work.
These problems didn't happen after update 3.5. I updated all of my plugins and WordPress after I noticed that I was having problems.
I am using Chrome. I just tried the same thing in Firefox, and I have the same problems.
What else can I try? I just tried shutting off my SmallBiz theme, and the buttons work... so the problem appears to only affect that theme. I sent the SmallBiz people a message. Anything else to try?