I have norten, when I click on anything email,favorites,news headline anything when I go online. comcast.net is my home page.anything I do when I type somthimg in the adress bar or search bar the first letter I type it freezes for about 30 seconds then everything workes. when i click on yahoo mail it goes to my mail and freezes when I click on a mail about 30 seconds, the whole screen freezes. after a short time my mail opens and it works fine after that.
Sounds like ....you might have some virus/conflicting programs installed. You should download malwarebytes antimalware. Once installed - reboot into safe mode (keep pressing F8 after reboot and select safe mode) and run the program - this will clean out malware and some viruses.
What exact version of Norton do you have? If I were you I would try uninstalling it - and install Microsoft Security Essentials.