McAfee Stores alot within the registry, which it records almost everything that it does.
There are Install Logs and Application Logs. Below I have only included cleaning of Application Logs from the registry and Firewall Log and Log Archive from the file system. From the registry cleaning below I exported each from the regristry in TXT format the combined size was over 827k.
[McAfee Firewall (Logs)]
LangSecRef=3022
Detect=HKLM\SOFTWARE\McAfee.com\Personal Firewall
Default=True
FileKey1=%ProgramFiles%\McAfee.com\Personal Firewall\data|log.edb
FileKey2=%ProgramFiles%\McAfee.com\Personal Firewall\Archive|Archive*.elog
RegKey1=HKLM\SOFTWARE\McAfee.com\Download\GDLog
RegKey2=HKLM\SOFTWARE\McAfee.com\Agent\ResultLog
RegKey5=HKLM\SOFTWARE\McAfee.com\Agent\Update\ResultLog
RegKey3=HKLM\SOFTWARE\McAfee.com\Agent\Update\Download\McUpdMgrLog
RegKey4=HKLM\SOFTWARE\McAfee.com\Agent\Update\Download\McUpdUILog
And before people start flaming me about using McAfee Security Center or McAfee Firewall, I got this from my girlfiends pc. And everything seems to be working well after the above cleaning.