Surprisingly i found that i had apparently already used 2.48 GB which based on my calculations would require a speed of 37Mbit, which based on the technical limitations of ADSL2+ is not possible. Based on what my modem says i have only got a MaxRate of 22247kbps since the modem was last rebooted.
I was downloading over the month end which based on what i saw was doing an average speed of 1.7MB/s (13.6Mbit) i am concerned that vodafone is over counting data based on this.
Has anyone else found the same thing on Vodafone?
Shown below is a screenshot from 00:15 showing the 2.48GB (unfortunately didn't think to take the screenshot earlier) (time is accurate on my computer syncs from NTP)

And a screenshot from IRC that i commented it in at 00:09
