I suppose it could seem unprofessional to the company you're leaving, depending on your perspective on things. But unless you're in a very tight-knit community,

I suppose it could seem unprofessional to the company you're leaving, depending on your perspective on things. But unless you're in a very tight-knit community, exactly what your previous company thinks of you usually has no relevance to your future employment options - specifically because it's a matter of perspective whether the departure was justified or not, and whether you'd be likely to leave the new company. If your field really is that tight-knit, then you'll have to use your best judgement. If the employer you're leaving really is that bad, then you have to trust that everyone knows it, and nobody will blame you for leaving them. They might more wonder why you hadn't heard about how they really were ahead of time. Or if you actually are uncooperative, unprofessional, or otherwise unproductive, expect that to get around too.