I'm doing this right now. Hired on as a "programmer" I haven't written code in the entire time i've been in my current position. I'm doing the crap work, as are all of my coworkers who were also hired as "programmers" in the hopes that in a year or two they'll be able to jump into what they thought they were signing up for.
So now I have a decision, jump ship and hurt my "future" but find a place that gives me real work and get some experience or stick around in my "gamble" and maybe eventually get back to what I was doing as an INTERN in 2 or 3 years.
I'm jumping. not because I hate the company, but because I won't be anywhere further in my career or skillset in those 2 years.