"Safety Minder has updates this computer. A restart is needed" Message

Recently I have been receiving this message on the computers on my home network that run the Safety Minder tool.  The first time I saw this message I thought it seems a bit odd but did reboot anyway.  Now I have got this message 2 or 3 times on each of the PC on the network.  I am starting to get very suspious now.  Norton AV finds no virus or spyware.  Should I be concerned?  Is there any test I can run to ensure I dont have a virus?  I have screen shots if this helps.  The process that is attached to the application is csrss.exe.

Thanks for the help.