I found a way to get past 2 (yes 2!) of the walls in ‘Old Hillsbrad’ I also found out that Blizz love invisible walls . a Mage may be able to blink past them but I haven’t tried this. I’ve got some vids of them below:
Wall 1 (difficult to master but it an be done, you need to jump at it from exactly the same angle I did, hard to do but once you do it the first time, should be easier the second.):
http://www.uploadtemple.com/view.php/1173300583.avi
Wall 2 (this 1 is hard also but once you get on the wall part you should be ok.):
http://www.uploadtemple.com/view.php/1173300020.avi
http://www.uploadtemple.com/view.php/1173300615.avi
Founded by me btw =)
Geo~
Edit: You can still do this since last patch.
P.S. i think it all there, if not you just keep jumping to get over the wall on the second one right after you get up the first wall.