<human>: Can you condense the text into three sentences or less?

So I noticed about 2 weeks ago my connection would just stop working.  Sometimes while download it would be 5 hours, sometimes 5 minutes.  My first inclination was that my hardware was failing.  So I went straight to the modem.  It continued.  So I reluctantly called Time Warned expecting that they would give me some long winded rant.  They didn't, I was transferred all the way to Tier 3 support. (which considering he needed a refresher on what a switch is, didn't instill confidence.)  However he was willing to send a tech since he couldn't find anything wrong.  This made me believe 1 of 2 things.  TW is killing my service, or my modem is broken.  Here are the following tests I have preformed.

**Interesting notes:**

1) My ip changed right around the time this happened.  It had been the same ip for about a year.
2) My city is 1 of 4 that were targeted as the test regions for capped internet.  TW backed down but I wonder if they are actually testing packet shaping.

**Symptoms:**

1) Network connection totally drops upstream when using BT.
2) Also while playing
<bot>: Is time warner secretly killing my connection?  Or should I push for a replacement modem?  Anyone else noticing the same things?