• Lack of urgency.
• Easily distracted. Heavy procrastinator.
• Lazy / doesn't work hard. Some very smart people are basically lazy. Don't tolerate this.
• Starts but never finishes things.
• Lack of follow through - makes commitments but does not follow up.
• Argumentative. Arguing incessantly about how to do something rather then just doing it.
• Slow. Taking a long time to code (or do) something simple.
• Perfectionist. Tendency to overdesign something and to spend 4 weeks building the perfect implementation versus 1 week building the thing that "just works" for 95% of the time.