Today I switched on my PC and windows is telling me I have no anti-virus and no firewall. I have read and followed the faq and deleted the files in \WINDOWS\system32\wbem\Repository but that didn't help. I have also uninstalled and performed a fresh install of the latest version to no avail. Can anyone help? Thank you. UPDATE: Why is ekrn.exe now taking up to 60% of my cpu time and slowing down my pc? UPDATE2: Okay, I've installed a free firewall, especially after seeing the results from this test. And I've installed the latest version of NOD32 (Which still isn't recognised by Windows Security Center). Seeing as I just paid for another year before just before all this happened, I hope a new update will come along soon and I can revert back to ESS again.