And then there are that handful of companies in the metro that post the same job for literally a year...Anaren, Carefree of Colorado, and White Wave come to mind..Dawn Foods posts a lot of the same job as well. 
I can train a dog to build a space rocket in 6 weeks..If you can't fill a job in a month, you either don't have a vacancy, or your training and HR staff is very, very inept...
Companies can post whatever jobs they desire, but these must be absolutely dreadful places to work.  Were I still in the market for employment, there is no way I would apply.