With the Update of 29 November 2010, Turbine added 10 "Teleport screens" to its "update" download.
Symptom: If these files are NOT present, they will appear as a "loading screen" (always following character selection and "Enter Middle Earth") with an ornate top and bottom, and the progress bar, but with a grey center with a white cross-hatch.
Installing these files will result in a "rotating" selection being displayed in that grey-cross-hatched area. Presently, they are all "advertisements" for the LOTRO Store, etc.
I have added those files to my web page for download. See the "Tips & Tricks" section:
"Complete Step-by-step installation instructions; grey screen solution"Please let me know if you have any problems with them.