As the title says, the rep with Sporeggar from killing Marsh elementals in Zangarmarsh is bugged. Instead of increasing by 45 rep per kill, it is decreasing, even though the UI says that "Reputation with Sporeggar increased by 45."
Sorry if there is already a thread like this, but I didn't see it.
Uhh.. when you're unfriendly it goes towards the left, because the amount is negative and it's getting "filled up". As soon as you hit neutral it will start going right, so don't worry, keep grinding rep and soon you'll befriend a bunch of purple smurfs.
Also, there's a bugtracker for a reason!