VISTA 64 is a different kind of cat, and I don't think Norton/Symantec work properly on it.
I would temporarily uninstall or disable Norton, then download and run Avira Antivir or Avast, and two or more antispyware programs such as MalwareBytes, SpySweeper, Spyware Doctor, SuperAntispyware and so on...
55c is not high... and 42c is downright cool 55 is not, but within normal ranges... and I not worth a lot of worry if you have a good cpu fan and a decent case fan.
I would temporarily uninstall or disable Norton, then download and run Avira Antivir or Avast, and two or more antispyware programs such as MalwareBytes, SpySweeper, Spyware Doctor, SuperAntispyware and so on...
55c is not high... and 42c is downright cool 55 is not, but within normal ranges... and I not worth a lot of worry if you have a good cpu fan and a decent case fan.