I try to keep mine at 1 page because that is what I was told to do in college to keep interest. Is 11 year old information completely relevant? Can it be discussed in the interview? Can it be put in a skills section and explanded upon? Can you cut down to the bare bones on description? Can you reformat to save space? If not then I guess you need a longer one.

I had to recently polish mine to get my new job and I was told after I was hired it was the best looking one although it was other factors that got the job. Mine has my time spent working through college (now 9 years old) because I was management and find it relevant plus when I was in college I was told working through college is very interesting. Although now I have been out 6 years not sure how interesting it is. It has my post college job. My most recent former job which entailed a promotion and two positions. It was a struggle of my editing training to fit a page. My former co-worker let me see hers and since she was finishing her MBA it was 2 pages because her education was a lot bigger. But she also went in depth with internships which I did not have the luxury of doing and has more positions to put on which are relevant.