It appears that Norton Internet Security, version 20.1.1.2 does not support the standard Windows 120 DPI screen resolution setting properly. Most dialog boxes are large and blocky and the required scroll-bar for the performance startup manager seems to be missing.
This type of problem may be the result of using non-MFC compatible software development tools, which usually have built-in user screen resolution setting support, and then only testing the software at the 96 DPI setting. All previous versions of Norton Internet Security have fully supported this user option.
system:Windows XP SP 3