the.it.dude
I tested around some things more.
What I found in the pftop log was that for nearly every click on a link in the WebGui, the LightHTTP Server starts a new session. That OK because the sessions have a small expiration time of 60 – to 90 seconds. But after some time there will be a session with an expiration time of over 85000 seconds and after this the WebGui is not reachable anymore.
Also after some time there will be a process called keglim and this has also the long running session time. Googling this process leads you to a thread in a FreeBSD forum.
http://forums.freebsd.org/archive/index.php/t-11880.html
It seems to be really a driver problem in FreeBSD with the Broadcom Network Cards. I changed the interface to one of the Intel NIC´s and do not have any problems at all with the WebGui for days.
So at this time it works for me in this way not to use the Broadcom NIC´s an just use 8 of the network cards in the servers.
In case of Endian and ZeroShell I agree with your opinion. These distributions are not really an alternative to pfSense at this time.
Olaf.