I've been wondering lately: If you aren't disgruntled, does that automatically make you gruntled?
Well, it turns out that someone content with their situation is not gruntled. Dictionary.com knows of no such word. In fact, the dis in disgruntled means "completely", and "gruntled" means "grumbling". Go figure. So, one wouldn't want to be disgruntled or "gruntled".
Ya can't win either way!