Hi Elke
The problem occured while adding the new functonality to the cattery.
It ony affected some cats, not all, thats why there is a difference.
As it was impossible to figure out which cats were affected, all cats have been boosted an equal amount of love afterwards though to make up for the mistake. (this means that some cats will have gained a bit to much love by now).
Note that differences are also possible when one cat is under influence from milk or cuddeling and one not, or when one is very hungry.
Regards
KittyCatS