SpyBot report shows the following entries:

--- Search result list ---
Microsoft.Windows.Explorer: [SBI $F1AA2176] User settings (Registry change, nothing done)
HKEY_USERS\S-1-5-21-1454471165-1957994488-1629655555-1003\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoLogOff

Microsoft.WindowsSecurityCenter.AntiVirusOverride: [SBI $3604910C] Settings (Registry change, nothing done)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\AntiVirusOverride

Microsoft.WindowsSecurityCenter.FirewallOverride: [SBI $0C94D702] Settings (Registry change, nothing done)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\FirewallOverride

Microsoft.WindowsSecurityCenter_disabled: [SBI $2E20C9A9] Settings (Registry change, nothing done)
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\wscsvc\Start

Microsoft.Windows.System: [SBI $268E3020] Settings (Registry change, nothing done)
HKEY_USERS\S-1-5-21-1454471165-1957994488-1629655555-1003\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoFind

Microsoft.Windows.System: [SBI $CA5FA75C] Settings (Registry change, nothing done)
HKEY_USERS\S-1-5-21-1454471165-1957994488-1629655555-1003\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoShellSearchButton

Microsoft.Windows.System: [SBI $83581ED4] Settings (Registry change, nothing done)
HKEY_USERS\S-1-5-21-1454471165-1957994488-1629655555-1003\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoToolBarsOnTaskBar

I am not familiar enough with the Registry to tell whether these entries mean anything or not. The ones about the Security Center being disabled I understand (and have turned off because it didn't play nice with ZoneAlarm AntiVirus/Firewall), but not the rest. The only other item SpyBot found was a tracking cookie from RightMedia - ad.yieldmanager.com, which I removed. Any help will be appreciated.