Like I said your computer has Roots.
Mine does not but I scanned my computer with the old version and found nothing wrong said it was clean.
I uninstalled the old version rebooted and installed the new 2007 version and after it finished I rebooted and ran the new version and it found 8 items = no Rootkits
but 8 items that promptly got deleted.
As clean as I try to keep my computer I was impressed that it found 8 more items. The new version looks as good as it runs.
I would recommend it to all and you cannot beat the price = FREE!