My Trusted Software Vendors File Disappears

My Trusted Vendors file keeps disappearing. I need to reboot to get it back. I have the firewall installed on 4 computers and I have this problem with all of them. Two are windows 7 and two are XP. When I notice that every application is starting to be blocked, I check the trusted vendors list and it’s empty. When I reboot it comes back populated and everything’s ok. Does anyone have any idea what’s going on here?
My current version is 4.1.150349.120

I noticed the same thing happening on my version 4.1 also. It has happened to me and to my brother’s pc already. It has not happened again but it is very weird.

Before this happened did either cfp.exe or cmdagent.exe crash? Please check the Windows logs for this.

no crashes, they just disappeared after an update.

No crashes with mine either, the list just randomly disappears and a reboot brings it back.