This is a nice list I don’t agree with completely, but its a worthy read nonetheless. Read the whole thing from the linked article.
Bias against action: There are always plenty of reasons not to take a decision, reasons to wait for more information, more options, more opinions. But real leaders display a consistent bias for action. People who don’t make mistakes generally don’t make anything. Legendary ad man David Ogilvy argued that a good decision today is worth far more than a perfect decision next month. Beware prevaricators.
Love of procedure: Managers who cleave to the rule book, to points of order and who refer to colleagues by their titles have forgotten that rules and processes exist to expedite business, not ritualize it. Love of procedure often masks a fatal inability to prioritize — a tendency to polish the silver while the house is burning.
Long hours: In my experience, bad managers work very long hours. They think this is a brand of heroism but it is probably the single biggest hallmark of incompetence. To work effectively, you must prioritize and you must pace yourself. The manager who boasts of late nights, early mornings and no time off cannot manage himself so you’d better not let him manage anyone else.
via 10 signs of incompetent managers | View from the Cubicle | TechRepublic.com.