I was wondering are there any gotchas that I should be aware of when using the watermark going from tables using asp:controls to XHMTL controls?
ASP.NET Server controls are a server-side concept. When they reach the browser, they have been transformed into standard XHTML controls. So, from a browser perspective - which is where the watermark plugin runs - it's all the same thing.
I know that this particular question might not be relevant to this discussion
It's not only about being relevant. It's also about being able to find something. When posting, just keep one simple rule in mind: new thread for a new topic. Imagine I know the answer to your question about IE and post it here. Tomorrow, another visitor comes along with the same question. He searches the forum for "IE missing view source". One of the threads in the search results is this one. What are the chances that visitor is going to click "Using the watermark" to solve his IE problem? Pretty slim if you ask me.
Now, imagine you started a new thread, called "IE 9 View Source Command missing". This subject covers the topic, making it way more likely someone is going to read it later.
A forum is not just about solving your problem, right here, right now. It's also about building up a knowledge base to help future readers find what they are looking for without asking (and answering) the same questions over and over again.
That said, the View Source is available when you right-click a page, or from the Page menu item on the toolbar. If it isn't, I don't know what's going on.