I'm no guru, but the 100% packet lost in the ping plot is not good. It looks like your computer is getting no updates from HTC. If your not getting update, your going to get discoed.
To fix it, your going to have to mess with with your modem and/or router. First thing to try would be to unplug both your modem and router.... if you have a router. In your case, everything between your phonr line and your computer, if it has a power cord, un plug it. Give it a few minutes, then plug everything back in. WHat this does is reboot the modem and router.
Run the ping plot again and see if the red bars disappear and that packet loss is gone. If the reboot doesn't fix it, you may have to have the DSL company come out and check your stuff, your modem may be dieing. Show them the ping plots.
Good luck!