Well i was leveling in dragon blight and there was a little ice block i was trying to jump on but couldnt manage to get all the way up out of the water so as i was going to get on my mount and run around when i noticed for a second my mount was just standing then fell so i did again i figured this out
so you swim as far up as you can and then mount up
and you only have a short while to press forward a bit and jump at the same time if you just press forward u will fall
http://img232.imageshack.us/img232/9...1809162024.jpg
http://img232.imageshack.us/img232/9...1809162027.jpg