Traffic ticket from 2008 is causing my license to begin suspension in 2011, is this legal?

I had received a traffic ticket in 2008 and now I am just receiving a notice in the mail that I will have my drivers license suspended starting now in 2011 and ending in 2013. My license was previously suspended for 2 years back in 2009 and just ended last week. I'm just wonder what the deal is here...