Bug Hunting Strategies?

Question

Let\'s say you have a bug that was found in functional testing of a fairly complex part of the software. It could stem from bad/unexpected data in the database, middle-tier cod

Answer 1

I tend to go with gut feeling, and a divide-and-conquer approach; isolating chunks of code of decreasing size where I think "the bug" is.

This doesn't work if you don't know, or don't understand the codebase - if that's the case, find someone who does, and go with their gut feeling.