Occasional "No route to host"

[Guest]

[pablof]

I've installed Endian 2.3 in a Pentium IV 2,8HT / 2GB RAM / 80GB HD that is currently working as a router / firewall / proxy in a 100+ Pcs network.

Everything is working smoothly most of the time, but we are having an extrange issue: sometimes users get a "No route to host" error in the browser when several people (12 - 16) try to connect to the same URL from different computers simultaneously.

The problem disappears after several minutes and just hitting the refresh button on the web browser reloads the page OK after some time.

I've checked the system graphs and whenever this happens (twice in 3 days so far) the CPU load is much higher than usual (about 50 - 60%).

Any idea on what could be going on?

Thanks!