I have run Trend Micro's Rootkit Buster on my notebook. The default settings have the option "Operating System Service Hooks" as deselected.
Before starting the scan I selected "Operating System Service Hooks" as well as all of the other items to scan.
When the scan completes it shows "1 hidden objects found":
ZwUnloadKey; hooked by C:\WINDOWS\system32\Drivers\uphcleanhlp.sys
Does this mean I have a root kit? Should I delete this hidden object?