FYI. Alot of us were able to have almost instant spawns on mining nodes and herbs within Deepholm (Silvermarsh) and Twillight Highlands (basically all over!). It was fun while it lasted, and not only made a ton of gold, but leveled up both my scribe and my gemmy to just shy of max, enough to make killer coin though...
Here is an excerpt of a blue post on hotfixes:
December 8
•The tradeskill nodes were too dense in Deepholm and Twilight Highlands for Mining and Herbalism. Several have been removed.
•Mining nodes were too dense in the entrance cave to Uldaman and have been thinned out.
FYI. Will post more if I see/hear/find anything.