I had my hosting company install umbraco v 4.11.3 (Assembly version: 1.0.4760.34993) and notice a problem right away. In Chrome and Firefox I am unable to see the richtext editor. However, they say they see the rich-text editor fine it Chrome and Firefox. The document type has the alias with the 'rich text editor' as it's type, but I can only see it in IE. I did notice with IE that when I go to the HTML view of the rich text editor there are some broken links though. The cancel and update buttons that {#update} and {#cancel} in them.
I am using Chrome Version 25.0.1364.152 m, Firefox v 18.0.2 and IE Version 9.0.8112.16421. Below are the screen shots.