This may or may not be your actuator. Our car has a "GCM" (General Control Module) that sometimes goes bad. This will cause weird locking issues (ie, you push unluck and only the driver door unlocks, but passenger, gas door, and trunk stays locked.)
This module is behind your golve box. There is a huge thread about this titled something like "my door locks are crazy" check that thread for more info and good luck!
EUROPROJEKTZ - Director, NorCal Chapter