Fortigate 240D crash

Hi all,

I wanted to ask something about fortigate 240D firewall.

It seems from what I understood that this firewall seems to crash or freeze from time to time and you have to reset it and load the backup again.

Now the explanation I heard is that this crash or freezing of the is caused by IT's network, but the logging is on in the firewall, What I wanted to know is if this crashing might be due to something else, that maybe they can disable certain features in firewall that might not be needed or if a bug can also do this or heavy traffice.

You see the WAN light is blinks  normally, but the LAN seems to freeze.

Does anyone have have an idea on how this could be fixed or what change can be done in the configuration?

Thank you in advance