ive been working with maya for a while and haven't had any issues with it untill now.
sometimes i cant extrude subdiv objects it just stops. ill be extruding then if i press ctrl-z to redo a mistake then it will just stop working. the box around the object will stretch and deform as if its actually extruding but the object remains unaffected. did i change an option somehow or maybe simple that i just overlooked it.