The Graduate College processes paperwork on a priority basis. Paperwork with a December 2014 graduation date is down the list a little ways. At this time of year, new applications and other beginning-of-semester processes take top priority, so the processing of AACs and PPSGCs in general have to take a back seat at this time. I was told that AACs and PPSGCs of those with a December 2014 completion date are likely to be processed in mid-late March, so please be patient. May 2014 and August 2014 graduates can expect more normal turn-arounds of 2-3 weeks.
It may be more information that you need, but I find that students who understand that the workload is not smooth and even and that there are limited staff to do all the work are a little more tolerant of delays! That said, those of you with December 2014 completion dates who have not heard from the Graduate College (by email notification) by late March, please contact them directly at either email@example.com or (208) 426-3903 and ask for a status update. Please do not contact me; all I would do would be to make the same contact.