When I try to run pingplotter I get this.

I went downstairs to my parents computer which is an old compaq running windows 98 and ran it on their computer and I got this.

I still have connection and can surf the web and get on AIM and play games, but alot of times my connection drops and same with surfing Ill have to refresh the page to get it to work. I've scheduled a comcast tech to come out here and check it out because I've read all over online forums about the new Motorola SB5120 modem being trouble with comcast service and I just bought the modem two weeks ago and thats when the problems started. Any ideas?