Why CCleaner do not delete all logs from folder
"C:\Documents and Settings\All Users\Application Data\Symantec\Symantec AntiVirus Corporate Edition\7.5\Logs\"
and all files/folders from folder
"C:\Documents and Settings\All Users\Application Data\Symantec\Symantec AntiVirus Corporate Edition\7.5\Quarantine\"
Please, view next image: