Hi
TelstraClear have charged me for 3GB additional usage ($8.84) this month when I only used 19.75GB of my 20Gb plan (according to their useage meter).
i see Skillie has been overcharged too in his post questioning the accuracy of the meter.
I'd suggest that you all check your current or next bill carefully!
Will be interesting to see how long it takes for me to get hold of the billing department on Monday now that Steve Jackson has made a promise on FairGo that he's got it sorted...