When I shut down the computer last night I noticed the send/receive lights on the MODEM were still flashing like crazy. I had used 9% of my 20GB allowance (I used last then half last billing cycle). Got up today to the lights still flashing, and my usage was now 28%. Checked my network for unknowns. There were none.
Help. I'm on my way to using my allowance early in the billing cycle!