Currently I am running a cpanel/whm server. I also have bandmin software installed.

However I noticed that there are a few accounts that seems to have huge amount in bandwidth usage difference between "bandmin" monitor and the one on cpanel. How do I explain it to my customer the huge difference? Also where are all the bandwidth logs.

Not that this helps, but I've heard a lot of CPanel sites complaining about that recently. Maybe we can get an answer from DarkORB or one of the distributors?