Yeah I am hesitant on doing this. I would like some answers from Bungie to help. I'm wondering if Comcast users have more issues now.

That's not true, they have hundreds of servers probably in a cluster of some sort, so its entirely possible that if only affects a percentage. I'm also affected from time to time, during Iron Banner it was nearly impossible to play. Have had the odd disconnect since. The problem is not my end. The problem here is that some people may actually be affected by their own network, but this will be the minority, yet the error codes keep pointing you off to networking help guides, which only cause frustration when its nothing to do with your network and doesn't work. Bungie has a problem here. Either bad code or infrastructure (or both). I don't really understand this, as they should be using the network stack provided by Microsoft. The best way to fix this is to get an XBOX LIVE recommended router which is known to work properly with uPNP. The built in modem/routers supplied by some ISP's are pretty crap, so you might be better off putting the device into bridge mode, and then buying your own "supported" router. However Bungie still needs to fix their networking/infrastructure issues, so they you are left with people who have real networking issues.