Why does the icon turn red after installing Service Pack 2 for Microsoft Windows Vista and Windows Server 2008? (4.0)
KB Solutions ID: SOLN2254|Last Revised: May 27, 2009
An incompatibily between Service Pack 2 and the 4.0 versions of ESET Smart Security and ESET NOD32 Antivirus prevents the proper functioning of real-time file-system protection. The ESET icon next to the system clock will turn red, notifying you that maximum protection is not ensured. It may notify you that your ESET security product needs to be reinstalled. Doing so will not rectify the incompatibility. An updated build for version 4.0 ESET security products is currently in development and will be released as soon as possible. To resolve the issue temporarily, follow the steps below to uninstall 4.0 and install the 3.0 version of your ESET security product :
http://kb.eset.com/esetkb/index?page=content&id=SOLN2254
Update
ESET Update module released-resolves compatibility with Vista and Windows Server 2008 SP2
