so, we've got a mess here, it turns out.

i turned my modem off around 11:30 or so last night - more than enough time to ensure that nothing would carry over. and, i turned it back on again around 4:30 this morning, more than enough time to make sure i didn't jump the gun. and, this is what happened:

so, even with the modem off, i have 9 gb of transfer.

the modem is physically turned off.

the only possible explanation is a spliced line. so, i'm going to have to call them to get a tech in here.

and, i'm going to send the landlord an email to ask him to fess up.