Mike here from the Norton Authorized Support Team.
First, make sure that you have all of the available Windows Update patches applied to Windows XP. Make sure that Windows Defender is disabled, and if you are using Norton Internet Security or Norton 360, the Windows Firewall needs to be disabled as well to avoid conflicts.
Next, make sure that you are using the latest version of your Norton product which is the 2010 version(Norton AntiVirus and Internet Security or Version 4 of Norton 360). If you need to update to the latest version, which is free as long as your subscription is still active, visit the Norton Update Center at the link below.Norton Update Center
After you have updated, or if you are using the latest version, manually run LiveUpdate to ensure you have the latest patches applied and then complete a Full System Scan to check for infections.
every so often, my CPU useage goes Way Up -- between 40-to 70 or 80 percent.
Process Explorer shows it as ccSvcHst.exe / Symantec Service Framework PID 916, !endthread+0x61 (with various CSwitch Delta and TIDs.
Once it had a msvcr80.dll and another time diMaster.dll
Any clue as to what's going on? (Oh, i'm on XP by the way)
i found this Goggling, but it hasn't helped me much:
Thanks, if anyone has any ideas.