I'm glad to see there are so many others with the "stubbornness" bug! 🙂

For me the worst feeling is when I get stuck in one of these weird, frustrating problems when it's close to time to go home and I cannot stay any longer at the office because, say, I need to pick up the kids from school at a certain hour and cannot delay. I end up thinking about the unresolved problem throughout the drive home and through the evening. My wife gives me annoyed glances while we are watching tv and I'm working on my laptop and it's always the same question: "Are you on call again?". :w00t:

On the flip side, I get a tremendous feeling of satisfaction when I have been able to figure out a difficult problem on the same day. Then the drive home is glorious!