Problem starting some services on NAV 4.3.1

Hi. I have a problem with NAV 4.3.1. When I start or restart it the following "services" won't start: Failed: eventengine ipdevpoll servicemon smsd I can start them manually and then they works. I also tried to reinstall NAV with "aptitude reinstall nav" but same problem. I'm running Debian Wheezy 64-bit. What can be the problem? Regards Mattias Söderholm