Since there have been a number of sanctions concerning that problem. Is is possible for the admin team to possibly list up the different lag types and which ones are considered cheating and which ones are definite server lag?
It does not need to be said what causes what if you believe that it promotes cheating but it might be beneficial to know what is what.
For example simultanous downloads while being online, multiple computers surfing the internet on one modem etc.
edit:
i find that important cause Hawk stated in one of the sanctions that such an effect may indeed be involuntary or accidental, so it seems that it must not necessarily be caused by a specific cheating program but probably also by circumstances. He also stated that the admin team can clearly identify server lag vs. non server lag.