Blender crashes on animation?

Whenever I have many keyframes(like 20 keyframes) and the keyframe button is on. Blender crashes on me all the time. Is there any explanation to this? This is getting annoying.

do you mean the auto-add keyframe button? maybe you have to many objects or bones selected, where blender tries to add keyframes in every object’s/bone’s IPO.

No actually. I only have one armature. And like 20 bones in the armature. Anyone also has this problem?