I know... it's been the biggest thorn in my side throughout this development... and here's why... (get ready for a rant)...
The tinymce software is developed by "Spocke" over at MoxieCode. It's an amazing editor... and by far my number one choice of content editors. It works great as a standalone in pretty much any content management platform. Plus, he has made it easy to add custom content and plguins to the source... and here inlies the problem.
Now, this is what has made Ultimate Tinymce so successful.. is this ability to modify the core and manipulate the editor. So, we have ALLLL these plugins which you can add to the tinymce to make it function differently.
Now, all these various plugins are written by all kinds of various coders. There are some "standards" to follow... but you can be a pretty crappy coder and still "pull off" an addon.
So, we have all these addons (written by all these different people)... all working together in a single install. I'm sure you can do the math ;)
MY job: go through all these plugins and first; get them to work as best I can with WP, and second; try to get them to perform similarly across various browsers.
Now, to your response ;)
The first notice is my fault. I apparently need to adjust the code for how that particular stylesheet is loaded.
The other notices will certainly be of use.
I'll look into this later tonight.. and see what I can do.
Thank you for your very informative response!!