How long should your resume be? From what I read from good sources, your resume should reflect your years of service. If you have worked 10 or fewer years, it may be around 1 page. For more than 10 years, it will be a little longer. As long as it takes to tell your career story.
After talking with several Hr professional around my company on this subject, more is better. Not saying you should put together a novel, but cutting it too short could cause you to leave out a strength Employers could be search in for.
Kim Isaac a writer for monsters has a good article and great guidelines on creating resumes.