When they "traced the hack on Ellicott's computer," the I.P. address shown is 192.168.0.17. This is a special address that is only used on private networks behind routers that perform Network Address Translation (N.A.T.). No addresses that begin with 192.168 ever get out onto the public Internet, so it would be impossible to "trace a hack" back to that address.
Dead Earl's lips move while Ducky is talking to Torres.
During the scene where Ducky and Agent Reeves are talking down in autopsy the camera shows the face of the victim Earl Goddard lying on the table and you can see his lips move as he closes his mouth.
Clayton Reeves says 'math'. An English person would say 'maths'.