WordPress MU

I have recently upgraded my mu and now when I try to embed html code it doesn't show up in my posts or pages. Any suggestions? Below you will find screenshots of the steps I have taken and what happens

So here is a description of what happen:

Step 1: Paste code into HTML tab of either post or page

http://www.screencast.com/users/wkirkwood/folders/Jing/media/134fedd8-937c-4020-b3fb-882e86b4734e

Step 2: Switch back to Visual tab and it all looks ok at this stage

http://www.screencast.com/users/wkirkwood/folders/Jing/media/0e56b3db-c51e-4fdf-8d38-ca25b7b5fc33

Step 3: Publish the post and then go to the blog to see how it all looks. Nothing shows up from the html embedding

http://www.screencast.com/users/wkirkwood/folders/Jing/media/e09c5352-cfb1-4ca2-958f-6733f266264d

this is not about "HTML" embedding but more exactly about embedding objects/videos, right?.

do a search here, I remember a similar post just a couple of days ago...

searching leads to: http://mu.wordpress.org/forums/search.php?search=embed&forum_id=0

there are plenty of relevant topics, no need for a new one.

besides, its the kses.php that does the filtering.

besides there are at least two plugins that I know of for embedding videos that are compatible with wpmu