You indicated you filed bankruptcy this year in Feb. (I assume chapter 7) & it was finally discharged in Aug. '08 -- do you mean Aug. '07?
Student loans normally are not discharged under bk - re "undue hardship" request to discharge you have to convince the judge of this by meeting certain requirements. Did you do this? You need to check with your trustee to see just what was discharged. Is this a government backed student loan?
If it wasn't discharged, if they get/have a judgment against you for the loan, they can do whatever is allowed in your state (you didn't give the name of your state) to collect on it (ie garnish wages if allowed, seize non-exempt assets).

