Norton Security Center came on my computer. I deleted the Norton trial edition and use PC-cillin for antivirus and firewall. However Norton Security Center is still on my computer and the file SymWCS.exe takes up about 50% of the CPU usage. All it seems to do is tell me that my antivirus, firewall and windows updates are turned on. Does Norton Security Center serve a useful function on my computer or can I delete it using a norton removal tool I've seen discussed on this site?