I have a pro 200 at each one of my sites. they have worked fine for over a year. Within the last 3 weeks I have been experiencing the VPN side of one of the units dropping all SA's. There are no errors in the log and the problem is only resolved after restarting the problem Pro 200. I can still access the internet from behind either firewall, just no VPN from one. I have reloaded the firmware numerous times on both units. Any help would be appreciated.