I've noticed since 1.2 or 1.3 that mobs around Whiterun and possibly other areas don't seem to be respawning for me. The first thing I do when I begin a new game is practice some skills on the wolves, deer, and bandits of the Hold. According to my journal, it's been 44 game days and I'm pretty certain these enemies (and the deer) should be back by now. Areas affected include Silent Moons camp, Halted Stream camp, and the Valtheim Towers.

While this problem far from kills my game, it does feel very empty and I worry that other sections of the world might also be affected.