They may be working on your ISP? thats if you have high speed Important Speed Increase Update Just when you thought the internet couldn't get any faster, Comcast High-Speed Internet brings it to you with more blazing speeds than ever before. Over the coming weeks Comcast will be upgrading all of our High-Speed Internet Service customers from 3Mbps downstream and 256Kbps upstream to speeds as fast as 4Mbps downstream and 384Kbps upstream - at no additional charge. The following cities are scheduled to receive this upgrade in January. If your location is not listed below, check back again soon. Please do not contact Comcast to find out when your city will receive the upgrade, as our customer service representatives have no additional information. All Comcast customers are scheduled to receive this upgrade by March 31st, 2005.