While your issue may be non-related to Comcast connection, there is a small chance it could be a Comcast issue.
I suggest you try the Comcast help forums. Those forums are provided to Comcast customers, and are a great resource for vendor specific issues. There are forums for computer issues, email issues, security, internet connection, cable tv, CDV, customer service, and billing.
Many times we, the users there, can provide answers tech support and customer service can't.
Click the link below, you'll be sent to the sign in page. Log in with your Comcast user ID (the part before .net) and your password. You will next see a first time forum users page, asking you to choose a screen name for use in the forums. Once you set that up, you'll be taken to the actual forums. http://forums.comcast.net/comcastsupport/
Go to Internet Connection Forum.
Read these two threads: (the first 2 listed)Troubleshooting Suggestions for Connection-Related Issues.
Try the suggestions here. If no joy, continue to Information Required for Connection-related Posts
. Post the requested info. We have connection experts who will (hopefully) be able to get this sorted out.
If nothing else, they can rule out something related to Comcast. (Once you get to the forum, save the page to your favorites. If you want to get to it from the Comcast home page, you have to jump through hoops to reach it)
Edited by Queen-Evie, 18 March 2010 - 03:52 PM.