My computer is Windows XP, and I use McAfee Internet Security. I dowloaded the free version of Malwarebyes Anti-Malware to see if some kind of bug had slipped by. At that time I was having problems with third party ads from possibly malicious sites popping up on the PCH game site. One of the suggestions from Microsoft Answers forum was to download Malwarebytes and SUPERAntiSpyware since McAfee scan showed nothing. I ran the SUPER... first, and I was a little confus about the findings and how to remove two quarantined items from the computer. It appears that one was left for Malwarebytes to remove. It did, because the only only quarantined item on a second SUPER... was: Trojan.Agent/Gen-Fake Alert C]TEMP\MALWAREBYTES' ANTI-MALWARE\CHAMELEON\WINLOGON.EXE Because the PCH pop-ups still continued, I did a safe mode System Restore back to the end of December -- about three weeks before the PCH problem began.. Step two was to bring McAfee and Microsoft updates to date. Step three was to again download the free Malwarebytes. The scan log results indicated the same two problems mentioned above. Item one detected: Registry Data Item HKLM\SOFTWARE\Microsoft\Security Center|AntivirusDisableNotify (PUM.Disabled.Security} and an arrow pointing to Bad (l) Good (0) -- Quarantined and repaired successfully. Item two detected has the same description except for: FirewallDisableNotify. Since McAfee is providing Firewall and Virus Protection, I feel the above items that were quarantined may be false positive detections. Is this correct? If correct, does their removal affect Microsof Security Center's ability to advise when McAfee Internet Security is not providing Firewall and Virus Protection? If the answer to this is yes or you don't know, I can always run another System Restore to put the quarantined items back in the Registry Data. Please provide answers to the two questions. Because I am not a person who needs to know how computers work, this whole discovery process has been frustrating. I did read the info on False Positives and PUMs and still am in a quandry. I also read the info on Malwarebytes Chameleon and wonder if this is why SUPER...scan indicated the trojan in Malwarebytes. Maybe this was a false positive!