So, last Sunday everything was fine. Monday I tried to connect to XBL but couldn't connect for some odd reason. The error code was 8015190E. Was told to "clear my cache" 3x and wait 3-4 hours by Xbox Support via Twitter. I waited 24 hours, still no XBL. I took my Xbox to a friends house and connected to XBL with no problem. Also, when I returned home I noticed that when I tested the XBL connection that it wasn't connecting to the internet. So, could this possibly be a router problem? Also: I'm connected with my ethernet cord via Internet sharing from my Macbook.