KPowersave stopped working

Hi all, I have TDE 3.5.13.2 installed on Debian 7.10. Some time ago (probably after one of security updates) my KPowerSave stopped working - it does not allow me to set power scheme nor does it recognize whether the laptop is running on battery or A/C. These features still work in other programs (eg. htop recognizes whether I am running on battery or A/C, I can use cpufreq-set to set CPU speed) so this is not a system-wide breakage. Does anyone have any ideas what might be wrong? Janek --- Politechnika Łódzka Lodz University of Technology Treść tej wiadomości zawiera informacje przeznaczone tylko dla adresata. Jeżeli nie jesteście Państwo jej adresatem, bądź otrzymaliście ją przez pomyłkę prosimy o powiadomienie o tym nadawcy oraz trwałe jej usunięcie. This email contains information intended solely for the use of the individual to whom it is addressed. If you are not the intended recipient or if you have received this message in error, please notify the sender and delete it from your system.