Agreed that you have to look at who is doing the ranking and what criteria they are using. In the USNews & World Report rankings our MBA program has been consistently ranked in the mid-20s over the past seven years.
A few years ago, the Wall Street Journal had us at 14th; however, the Journal has an extreme east-coast bias (they had Stanford ranked around 50th, even though it is easily one of the top 10 if not top 5 programs in the country).
If you look at the big picture, our MBA program is in the second-tier of national schools. We are a step under the very best schools like Harvard, Wharton, and Kellogg; but we are competitive with schools outside these very elite ones.
As for the deluge of MBAs we are seeing, I believe it is going to result in the creation of three-year, certified MBA programs. My fiancee graduated from Ashland with her MBA in 2003 and was one of 2 students from her school to participate in an experimental cMBA test. I have also heard rumors of Case Western considering the creation of a three-year Doctor of Business program.