de version of timekpr en dont work propely in ubuntu and xubuntu..
timekpr i see that there is and nanny i dont see..
make software like nanny standard in ubuntu its a good value like libreoffice...i find out nanny worked here, not propely but it works for 50procent.
i can only block internet in time..
but if you make that software within ubuntu standard; dan will go the bugs away between versions...