I recently upgraded from AT&T DSL (which was dropping the connection multiple times in a day) to Comcast cable internet. I'm connected via a Cisco Linksys wireless router (the same one I was using for the DSL). The connection is working great and is fast and I'm having no issues with it, except I keep getting the blue box popping up that says 'Interent Disconnected: this computers connection to the internet has been lost" while the icon at the bottom of the screen and my control panel network screen both show I'm actually connected and I'm having no problems connecting to various websites, streaming movies, etc. Then after awhile I get the blue box again saying 'this computer is now connected to the internet'. Then after awhile the disconnect message again. I'm having absolutely no connection issues, it's just an annoyance that the 'disconnected/connected' messages keep popping up. What is causing this? My computer is an older Dell (about five years old maybe?) running Vista. I have my work computer and a tablet also connected and am getting no errors on either of them. So basically, I'm not actually have ANY connection issues, just these annoying messages.