I just found this article while I was speculating my own job situation, it's a bit different than the situation you've listed.

I'm a hardware technician / system developer for small business that took a job with a new company when I moved 100 miles for my new wifes job. e\

The company that I work for promised that they were going to promote my skills and use me to increase their client base (with a raise that came with the boost in revenue promised), after a month of pack / ship work for ebay sales they put me in a warehouse counting apple parts because I'm a acmt and in the owners mind I am the best person to inventory the parts because I know what they are.

Wish he would have seen this article before I made the secret decision 6 weeks into my new employment that I was done and moving on.

I like the man on a personal basis but he's no manager.