LuComServer.exe
(Symantec)
LiveUpdate Engine COM Module. LUCOMSERVER is entirely to do with Nortons LiveUpdate, whether you have Norton AntiVirus, Norton PCAnywhere, Norton Personal Firewall, or Norton Internet Security. It only appears in your Task List if you happen to bring up the Task List at the very moment that Nortons LiveUpdate is checking whether there are software or virus definitions updates, or if LiveUpdate is in the process of downloading updates.
Recommendation :
Do nothing. As soon as LiveUpdate finishes LUCOMSERVER will disappear from your Task List. If LiveUpdate is not allowed to finish (your connection to the Internet is closed), or is waiting for end-user input, LUCOMSERVER will remain in the Task List.