Just this morning I just received the red box also, stating it can not update. I am on cable, always connected, first time this has ever happened since ive owned avast. I have a feelign servers are down for avast, this could be the only explanation, now that it has happened to me also.
This was a fresh reboot, upon os coming on, message came up.
Shog, my mom is on dial, so marked as such...
I am on cable, therfore marked as such