I have an issue right now with two of our WP servers. We have one old WP server which hosts 300+ sites running version 3.1.2. One of our professors called today to say he couldn't embed Youtube. Each time he would put in the code it would disappear after he saved a draft or tried to preview. When I logged in as Network Admin, I was able to embed the code under his WordPress as myself.
We also have a 3.5.1 server which is what we're starting to move all our users to gradually. I had him migrate his blog to the new server and he cannot embed at all. I confirmed this by logging in to my test account. As soon as you paste the code into the post and hit either preview or save draft, the code disappears.
Does anyone have suggestions for either version?