Wordpress 3.5 is a disaster

Ever since upgrading to Wordpress 3.5, blogging on my other blogs has been an absolute nightmare. For a start, the formatting is constantly all over the place. You press return in the visual editor for example, and it goes nowhere, so you press return again and then suddenly you now have two empty paragraphs, even though you're only seeing one in the visual editor. 

Insert an image, and the visual editor thins it's left aligned, even though it isn't. I was posting a blog post to my photo blog this morning and the new media manager hung four times while trying to insert images into a Post. It's a total joke, and it's a real bloody problem. I don't know what to do. I'm using this to test out square space as an alternate platform, but I'm not sure it's a practical option. The only other hope is that it's theme related, but I don't know. I'm going to set up another test blog with the default theme to rule it out.

I spent a lot of time getting my theme the way I like it and I really don't want to have to go re-doing it with a new base framework, but I'm going to have to do something as it's reached the point of being ridiculous. I can only home that an upgrade is imminent that will fix the problems.