I'm don't have sp1 install for office2010. I don't think that's the issue.
»www.pptfaq.com/FAQ00761_ ··· oint.htm
And in some cases, CMYK graphics files can cause weird display or printing problems, so it's best to avoid CMYK altogether.
I'm going to try save as pdf in powerpoint 2010 and try printing it that way when I'm back at the office. I printed to a bullzip pdf printer and the color was off but when I used the powerpoint 2010 pdf save as, the colors looked fine.