Has anyone with a Unibody developed any painful elbow issues using the new glass trackpad? It seems that it has caused a case of tennis elbow (aka mouse elbow) for me. I'm told it's using a mouse improperly (don't use a mouse) or having your wrists bent for long periods of time while typing. I think mine is caused from long periods of typing with my notebook on my lap. I use an iLap to hold it and I must be bending my wrists instead of extending them. So now I'm typing at a table and I might go for a cortisone shot later in the week. Have any of you had similar experiences?