I have been hearing from other Katrina adjuncts in response to queries put out on a number of forums. Unfortunately, your experience is all too common. Another variation is the full-time position that has a fuse of 3 years--no matter what. While this is a temporary fix to make up for need for teachers since the tenured faculty were let go, these temporary (non-tenure and low paying) positions are beginning to hit their limit, with people scrambling for the next fix.
About your point of being considered "degenerate," this is the problem with adjunct stereotypes. We need to be much more public about who adjuncts are, how many of are scholars, and how many have taught for more than 25 years in higher ed. Also, the ages, genders, and ethnic make up is not what some would assume--i.e. the old stereotype of the white middle class woman who is just bring home a little extra money for the family.
Data from the US Labor dept indicates many new hires in universities and colleges will most likely be primarily part-time and non tenure--to provide financial flexibility for institutions. (
http://www.bls.gov/oco/ocos066.htm#nature)
The continuing Ph.D. program growth in some areas (like English) is making the pool of people wiling to settle for these positions even larger.
I hope to make these conditions more public. In fact, as New Orleanians say all the time, "This is not just a Katrina problem." But for the next disaster, anyone anywhere could be in the same "boat." There are earthquakes, floods, and financial disasters that are not limited to the South.