The computer in question is a Dell Vostro 1000 with 2GB of RAM, 120GB hard drive, AMD Athlon 64 X2 TK-53 processor, Win XP SP3 Home edition. The Norton product is NSS 20.2.0.19. The browser is Firefox 18. IE version is V8, not used.
When shutting the computer down, a text box pops up on the desktop that indicates that ccsvchst.exe has not shut down. You have to choose “End Now” to shut the computer down. From searching this NET, this seems to be a common problem.
I can boot up the computer and get to the login screen and shut down fine. I can boot up, go through the login screen and shut down fine. I can boot up, open Firefox, close it and shut down fine. If I boot up, open Firefox, then play a Flash game such as Castleville, when I go to shut the computer down, the box telling me that ccsvchst.exe is not responding appears. I’ve checked in Task Manager to make sure that plugincontainer and firefox are no longer present in memory before attempting to shut the computer down.
I’ve found the page linked below from Norton to stop this problem. I’m not going to do this since it isn’t a fix for the problem but a hack that will cause other problems.
The computer does not have a virus or malware causing this. I've done a clean boot, completely removed NSS and reinstalled it.
I’ve found several other threads claiming that this problem will be fixed in an upcoming release. Most of these threads are 1-2 years old. There clearly is still a problem.