You heard of the players who get banned for having too many gardening mules.
Well, here's SE's final solution.
Last Monday (August 3, 2009) we had an update. Wana guess what it was?
SE imposed a limit on the number of gardening mules without telling anyone.
The limit is 6 characters (your main and 5 mules) and I found this out cause I have (or had) 7 characters. All 7 characters did onions at a regular basis, got me like 17-20 stacks of onions every 4 days.
After Monday, my last mule only gave me 1 onion per pot, where the minimum is (and always has been) 2. It even gave me 1 crystal where the min is 7...
and it was for ALL THE FU!@#$% POTS.
So, just throwing that out there, SE imposed a mule limit now, and I just verified today, cause this is the second time it has happened.....