EHM The Blue Line

This seemed to be an issue in 2007 as well. Unless I have a very strong team, my 2nd lines sometimes have a plus minus in the negatives; both forwards and defenseman. However my first line has very good +/-. Is this an issue with my tactics or some sort of bug?

I don't think, my second line as about the same +- as my first line. Must be that your 2nd line is much weaker ?