I updated, and now Tumblr isn't working. Help, please?

Tumblr was working perfectly until my computer asked if I wanted to update to Internet Explorer 9. So I did. When I did so and I logged onto Tumblr, it looked f*cked up. (links were dark, I couldn't read it, etc) So I uninstalled it so it could go back to internet explorer 8. Now it's back to 8 but now tumblr freezes all the time, whenever I reblog something it freezes, links are there but I can't see them, etc. It's like really slow and freezes up too much. Help !!? What do I do ?! It was PERFECT before... now it's all crappy even though it's back to internet explorer 8 ? :( Help please.