Firstly, I would like to apologize for the image at right, which is really not directly related. However, the only thing I could think when seeing the battlegroup name was Helium going "Miiiisewy" -- watch these flash videos, especially the first one, and understand.
Now that's out of the way, here's what I meant to talk about. Apparently the realms in the European battlegroup Misery had some maintenance difficulties on May 21st and 28th, and will be compensated by the upstanding people at Blizz with a free day of playtime.
So if you have a character on any of the following realms, enjoy your €0.43 worth of credit:
Aerie Peak, Boulderfist, Eonar, Frostmane, Grim Batol, Jaedenar, Kazzak, Kilrogg, Outland, Ravenholdt, Stonemaul, Tarren Mill, Vek'nilash, and Wildhammer.
Oddly enough, they're also giving a day's worth of rested bonus to affected characters, which is something I haven't seen them do before. I wonder if that's going to be the norm in the future.