While doing some switching between runlevel 3 and 5 I noticed that
/etc/init.d/lm_sensors has 2 problems:
1) It uses /var/lock/subsys/sensors, whereas it should use
   /var/lock/subsys/lm_sensors otherwise /etc/rc.d/rc will
   try to start it again when switching runlevels even if its
   already running.

2) It should containt the word action or killproc so that
   /etc/rc.d/rc wont start it with the action function, 
   currently during startup "Starting lm_sensors:" gets
   printed twice.

The attached patch fixes both problems, you should probably change the path to
the initscript in the patch.