Incorrect usage count?

[#1]

Hi,
I think my broadband usage is being miscalculated as I have an automated downloading operation setup to download btween midnight and 8am and I have done light web browsing today however the usage history for today says I have used 2.74gb - this makes no sense! I am nearing my monthly usage allowance and Im sure something is not right.
I dont want to be capped to a very low speed for 5 days if my usage is being counted incorrectly.
Thanks!

[#2]

I'm sorry if this sounds silly, but have you confirmed that your software has in fact obeyed your scheduling?
Have you confirmed the scheduling is set between 00:00 and 08:00 (I set mine to 00:05 and 07:55 just to be safe)
Have you checked the clock on the machine, to make sure the scheduling is being applied correctly?

[#3]

Looking at your hourly usage (I can provide that to you if you like?), most of the peak usage is upload traffic between 8 and 9am (almost 2GB). You might want to set an upload limit to restrict the speed this can be accrued.

[#4]

From personal experience, I would suggest you taking at look at services like Dropbox. They tend to have the potential of throwing your usage through the roof, especially if you have multiple computers and/or change files a lot.