There could be a few reasons for this. I will have to look into it.
The most likely scenario is that there is some sort of latency between the client an the server. The server records the log items using its own clock, so if the client is running slow, they could be out of whack.
This could be because of a coding issue on my part - The server might be starting the match before the client is ready, hence throwing everything off on a slow connection. It could also be an accumulative thing.
Worst case is that the client is using some sort of SpeedHack and slowing the client down on purpose, but that would raise some other flags that would make it easy to identify.
I don't want to start a witch hunt here, so please refrain from labelling people hackers until we have some definite proof.
Thanks for bringing this to my attention.