Helping Your Ex-Employer?

ali_bubba asks: "A funny thing happened to me today, I have beeb unemployed for over 5 months, and all of a sudden my ex-Boss calls me and demands (well, it sounded like a demand) that I help her out, because her entire corporate LAN was down. Naturally, she knows that I'm kind person, but boy what attitude, so I did help her save the day. She did not even bother calling me back to thank me, (like if you get slapped, turn the other cheek, as Jesus once said) Has anyone else had this happen to them before? What actions did you take?" While I can understand that some people in this situation may harbor some ill will if place in this situation, it may behoove you to see this as an opportunity, and at the very least, an opportunity to make a little money off of your old company. It doesn't pay to burn bridges, especially if they need something that you can provide. For those who have been in this situation, how did you handle it? For others, if you were offered work from your old job, would you do it, and under what conditions would your perform said work?