I installed ntl Netguard yesterday, the free antivirus software provided by this broadband provider. The comments on various forums where that it was easy to install but I found this to be incorrect advice. The main issue, and the one I blog about here is the creation of the required product folders when you have a remotely stored profile folder caused due to Active Directory/Group Policy folder redirection policies.
For the software to install you need to create the "logs" and "test" folder in the "ntl netguard" folder, which needs to be in the "ntl" folder in your Application Data folder. All the folders in quotes you need to create.