I have now tried two different 40Cs on the 5.0.4 upgrade, and both have had the same problem. The performance is hammered, mostly by what I believe to be a VERY chatty LAN port. As soon as the unit reboots under the new version, the traffic lights on the LAN side constantly fast flicker. Traffic gets through but seems to be fighting a lot to do so. My throughput dropped to a tenth of what it is normally.
What is irking me is that the support doesn' t seem to be admitting to a problem with it because " my configuration works on their 40C" . Perhaps I have some unusual magnetic field or sunspot activity surrounding mine. Mine is a Fortigate (no embedded Wifi), not a FortiWifi. There really isn' t anything special about the configuration.
It is easy to downgrade back to 5.0.3 (which runs fine), so I would love to hear if anyone else sees this problem? If so, can you please share the news here and with the support team?
