Well, if there are any negatives on it, still displaying, they would do the same damage as if they were on an open report.
Once installment accounts are closed (and therefore paid off), they stop helping your mix of credit. If you have no other installment loans still open, you've lost that contribution to mix.
Otherwise, I think that the only effect is the contribution to age of credit history. Coffee hasn't really kicked in, though, lol.
* Credit is a wonderful servant, but a terrible master. * Who's the boss --you or your credit?
FICO's: EQ 781 - TU 793 - EX 779 (from PSECU) - Done credit hunting; having fun with credit gardening. - EQ 590 on 5/14/2007