The honeymoon may indeed be very short, if it exists at all. The due dilligence on a new job is really critical, especilly in the case of CIO jobs where the stakes are high and the tolerance for failure low. A while back I wrote a post titled Seven ways to find out if that new job is right for youthat addresses that very issue. Know what you are getting into!
Starting a new job is always an exciting and stressful experience. You are excited about the potential opportunities and your employer likely has high expectations of you. A large percentage of new CIOshave been recruited or promoted into the job because of some problem or perceived failure on the part of their predecessor. For this reason, getting off to a flying start is critical to your long-term success.