I am having a similar problem and none of the Norton techs have been able to help me. I have Windows XP.
I have used NIS for years. Then I stupidly decided to upgrade to Norton 360 which kept locking up, got some great advise on these boards about that, and so I exchanged it to go back to NIS except I got the 2009 instead of the 2008 I had.
Shortly after installation I was no longer able to use Internet Explorer and kept getting the message that the page could not be displayed but I was definitely online as I was able to send & receive email.
To shorten the story - numerous techs un-installed and re-installed the software, removed software they felt might interfere with NIS 2009 with my permission, has me contact my ISP to reaffirm everything was working properly, did full system scans, un-installed & re-installed IE 7 to no avail.
Luckily I had one of the techs download the Mozilla browser for me before one of the re-boots so I can at least still get online with that software. The most perplexing thing is that I CAN use the IE7 browser on this computer if I log on as a guest or under another name but not my profile!!!!!!!!!
I am at my wits end. I just read about some Malware on these boards or trojans. Could this be my problem and what should I do?? I still have an open case with Symantec so I would think they would have advised me if it were one of these issues.
Any help would be greatly appreciated.
[edit: renamed subject for new thread]