Dilli,
Depends what you want to do !
If you want to stop the error and are happy that kpowersave doesn't run (no battery mgmt), then drop into a command window as root and type:
chkconfig --level 2345 kpowersaved off
This will stop it starting at boot time.
Google (& the
sourceforge page) suggests that some versions do have a reported but unsolved SIGSEGV. You could try the latest version from sourceforge or just keep the laptop on AC!
HTH