Right after computer new start I get the red dialog "this computer is probably not protected" because some LiveUpdate error f*up Norton 360 - please deinstall and reinstall it. Like in the 1990's. And when you click on the Support Site button, it opens a list of local files - so even that is broken... then you go deinstalling it and THAT crashes as well, direceting you to the Norton Remove and Reinstall tool - which crashes as well because some other error. It's actually funny how crappy the experience is.
Three reboots later, the reinstall tool finally went through and actually reinstalled it. So patience is the key.