A couple of years ago I would have given similar advice. However, since the recession started the job situation has utterly changed, and you can't just leave a

A couple of years ago I would have given similar advice. However, since the recession started the job situation has utterly changed, and you can't just leave and expect to step into another job quickly - no matter how talented you are or how many letters you have after your name. My advice now would only be to leave if you have a good alternative confirmed job offer or are starting a business.