Cannot create or edit post

I cannot create a new post or edit an existing post to my blog, http://theotherroom.wordpress.com. I just get ‘Waiting for http://theotherroom.wordpress.com/wp-admin/post-new.php’ and the page hangs to infinity. I have tried IE8, Mozilla and Google Chrome to no effect. I have recently switched to Vista, although this may be coincidental. Any assistance greatly appreciated.