That, my rotund friend, is an IP ban.
We're IP banned at my home too. Here's what's scary: I noticed it last night, switched off the DSL to reset the IP, and this morning...we were still IP banned. Jen went to the school where she works, and she's banned from EI at her office computer! She never logged onto EI from her work computer. We and that school use the same ISP, so we can only conclude that Orpheus banned an entire fucking ISP.
And that, ladies and gentlemen, is an act of fear.