K2 host server eats up my RAM! :) Oh, really?

One of the frequent type of the issues I have to work on is high RAM usage (normally description of such problem is accompanied by phrase “with no apparent reason”) by K2 host server service. Most of the time I’m trying to create meaningful K2 community KB articles based on support cases I work on … K2 host server eats up my RAM! 🙂 Oh, really?