1.The Norton problem.
Solution : Download AVG and Zone Alarm then uninstall Norton.
If you really want to keep Norton,there are some fixes
here
2.The right click menu freeze problem.
Cause :This is usually caused by a faulty shell extension put in the right click
menu.Sometimes by spyware,sometimes by Divvx or Spysweeper or photoshop or any video program.
Solution :From -
http://www.ghisler.ch/wiki/index.ph...C_causing_crash
1.Go to Regedit
2.Key HKEY_CLASSES_ROOT\*\shellex\ContextMenuHandlers
In this key, all shell extensions are listed which work with all files. The * is a real star, it does not mean 'any key' here!
3. Choose "Registry" - "export registry", so you can revert your changes later. Choose to export only the selected branch.
4. Now delete one context menu handler after the other, and then try each time in (Windows Explorer) whether right click works again. This way you should find the defective extension.
5. When you have found it, you need to double click the .reg-file created above to restore all shell extensions, and then delete only the malfunctioning extension.
You may have to repeat this with the keys
HKEY_CLASSES_ROOT\Directory\shellex\ContextMenuHandlers
or
HKEY_CLASSES_ROOT\Folder\shellex\ContextMenuHandlers
If the error happens with directories or with virtual folders.