Not a huge problem but kind of annoying. I've been farming inferno act 1 for items. Every time I get to the stairs as soon as you enter level 3 cathedral before saving the templar. I try to attack the skeletons that are always there and for some reason Disintegrate only casts about 2 yards in front of me like I'm trying to cast down the steps but I'm no where near the steps and the skeletons are already all the way up the stairs. Just a little heads up dunno whats going on with it but just something annoying.