Every new software comes with some glitches that have to be worked out, but in the case of Norton 360, the benefits outweigh the glitches, especially since in the case of most of the glitches, they can be solved quickly and simply.
If you have updated your Norton 360, you might have come across an interface problem with your Norton Internet Security 2013. Apparently, some users have come across user interface problems. Some have an intermittent character kerning issue while most have blurry texts or blurry screens. This usually happens when your run on OS windows 7 enterprise 64.