Did you ever find a fix for this, we are experiencing the
same problem.  These servers were already SP6a, last
change about 4 months ago, installed dhcp services,
reinstalled service pack, all went fine.  Tried to
install the latest security patches when the welchia
virus came out, the servers were not infected, and got
the same error.  Tried to reinstall SP6a and got the same
error.  We have 17 services, all set up the same, from
the same cd, of those only 6 are effected this way.