The problem can occur on any type of norton when doing liveupdate.
Just go in to ur personal firewall, disable it for 30mins
click on configure and go to program control (know as Program)
And look for svchost.exe and Microsoft Internet Explorer and change that access to "Allow all" it can say Blocked or Automatic.
Then change it as i said, and it should work fine,
Otherwise u can try this file
ftp://ftp.symantec.com/public/english_us_...06/ISRlRstr.exeit Restore the Firewall Rules back to default.