http://community.norton.com/t5/Norton-Internet-Security-Norton/ccSvcHst-exe-System-uses-100-cpu-for-hours-with-no-backround/m-p/538216#M173148 <p>Unfortunately, several of the links to fixes in these posts are no longer available. I'll run Process Explorer the next time i see this happen (probably later today).</p> Sat, 17 Sep 2011 20:02:08 GMT shinai 2011-09-17T20:02:08Z http://community.norton.com/t5/Norton-Internet-Security-Norton/ccSvcHst-exe-System-uses-100-cpu-for-hours-with-no-backround/m-p/538080#M173110 <p>I'm running NAV 16.8.0.41 as part of NSW 12 Premiere. I've been noticing for perhaps a year or more that ccSvcHst.exe takes up 100% of one of my cpus for an hour or more at a time, several times a day. This is the only time my laptop gets hot enough to fry an egg. Sometimes i check the NAV interface to see what it's doing after it's been running like this for a half hour or more. Usually, it says it updated definitions a few minutes ago. I check again in another half hour or so and it says it downloaded definitions again a few minutes ago. How many times in a row does NAV update definitions?</p><p> </p><p>When i open the CPU graph, all the backround jobs listed show as complete. I only have idle time scan enabled, so it's probably not scanning.</p><p> </p><p>What on earth could NAV be doing that's so cpu intensive for so long so many times a day when it's not scanning? Does it really take hours a day to update the virus definitions?</p><p> </p><p>Finally becoming concerned that something's not right. Thanks for any help.</p> Sat, 17 Sep 2011 17:52:08 GMT http://community.norton.com/t5/Norton-Internet-Security-Norton/ccSvcHst-exe-System-uses-100-cpu-for-hours-with-no-backround/m-p/538080#M173110 shinai 2011-09-17T17:52:08Z http://community.norton.com/t5/Norton-Internet-Security-Norton/ccSvcHst-exe-System-uses-100-cpu-for-hours-with-no-backround/m-p/538110#M173117 <p>Norton updates about every 10 minutes. These are the &quot;Pulse Updates&quot;, not the regular Live Updates (of which there are 2-3 a day) - they are very small updates that are downloaded in a second or so on even slow connections, and they are very likely not the cause of your problems.</p> Sat, 17 Sep 2011 18:05:59 GMT http://community.norton.com/t5/Norton-Internet-Security-Norton/ccSvcHst-exe-System-uses-100-cpu-for-hours-with-no-backround/m-p/538110#M173117 Bombastus 2011-09-17T18:05:59Z http://community.norton.com/t5/Norton-Internet-Security-Norton/ccSvcHst-exe-System-uses-100-cpu-for-hours-with-no-backround/m-p/538144#M173128 <p>When i checked the CPU usage while Norton was using 50% of my Core 2 duo, all backround jobs were listed as complete but one of them had yellow text. I didn't know what that meant. I think it was Insight Submission. When my CPU finally went back to normal (after about 2 hours), i checked the CPU usage page again. Insight Submission was now black text. That job was started at 11:40 PM last night. It says the job's duration was 11:44:15. That's almost 12 hours, right? My system was hibernating while i was sleeping for approximately 9 hours. Should Insight Submission peg my cpu and run for several hours several times a day?</p><p> </p><p>What does Insight do and why would it be pegging my cpu like that? I just opened the Insight window and let it search (i've never done that before - could that be the issue? should i run insight regularly?) and it says i have 51% trusted.</p><p> </p><p>Any help is appreciated.</p> Sat, 17 Sep 2011 18:42:08 GMT http://community.norton.com/t5/Norton-Internet-Security-Norton/ccSvcHst-exe-System-uses-100-cpu-for-hours-with-no-backround/m-p/538144#M173128 shinai 2011-09-17T18:42:08Z http://community.norton.com/t5/Norton-Internet-Security-Norton/ccSvcHst-exe-System-uses-100-cpu-for-hours-with-no-backround/m-p/538150#M173130 <p>I can't figure out how to edit my posts, so i'm adding another. I'm currently reading through all the posts on this subject that i can find in these forums. I haven't found anything to address my issue yet, but i'm still looking.</p> Sat, 17 Sep 2011 18:48:04 GMT http://community.norton.com/t5/Norton-Internet-Security-Norton/ccSvcHst-exe-System-uses-100-cpu-for-hours-with-no-backround/m-p/538150#M173130 shinai 2011-09-17T18:48:04Z http://community.norton.com/t5/Norton-Internet-Security-Norton/ccSvcHst-exe-System-uses-100-cpu-for-hours-with-no-backround/m-p/538216#M173148 <p>Unfortunately, several of the links to fixes in these posts are no longer available. I'll run Process Explorer the next time i see this happen (probably later today).</p> Sat, 17 Sep 2011 20:02:08 GMT http://community.norton.com/t5/Norton-Internet-Security-Norton/ccSvcHst-exe-System-uses-100-cpu-for-hours-with-no-backround/m-p/538216#M173148 shinai 2011-09-17T20:02:08Z