I've seen one on my server in Twilight Highlands, I was on my hunter looking for Sambas, and saw a lvl 80 dk backing into a wall and jumping, next thing I know is that he disappears, but since I had track humanoids on, I tried to follow him. I couldn't because I only have a 280% mount, and he was booking it like a bat out of hell.

Yes 310% mounts out run me, but they don't go off my minimap as fast as what this person did.

Yey for underground and speed hacks -_-

The bots are back in force. I've watched Whiptail farmers teleport from node to node the whole length of the river. I sent my gatherer to Outlands, as it's a waste of time trying to find a node in a Cataclysm zone. Herb prices continue to go down even after Blizzard fixed the spawn bug, and ore prices are reaching ridiculous levels (20g obsidium).

He was probably frost with On a Pale Horse. Gives you 20% speed boost. That plus a 310% mount could easily outrun you.

@Cory

That's the thing, he didn't mount up, and as well, even the 310% mount with On A Pale horse doesn't move that fast.

And possibly connected; I've seen an explosion in leather over the last week or so. I've been leveling up LW on a new alt and there was hardly ever any leather on the AH, so I resigned myself to grinding it all. Now suddenly there has been multiple dozens of stacks of borean leather on the AH for a fraction of what it used to go for, and the supply never seems to run out.
I'm guessing some new form of bot or hack is in the wild.