Hit next turn and got messages that cities had leveled up. When the first of those came up the map started jittering in the background. Continued into my turn after I answered all the questions. Quicksaved & exited.
This happened once several versions ago. Was fine when I loaded the save.
quick save while map was moving back & forth http://dl.dropbox.com/u/8928343/QuickSave-jitter2.EleSav
debug.err http://dl.dropbox.com/u/8928343/debug-jitter2.err