The new server is a i7-975 and it seems to have fixed our problems related to CPU and network performance.
Now that the performance and network issues seem to be resolved, I'm going to be looking at the reason we're still getting crashes. I'll post information about these crashes here. The upside is that the server restarts within a minute now - rather than the 20 minutes it took in the past.
The underlying reason for crashes is because FLServer is buggy. Using FL hook we patch a dozen or so known bugs and I intend to extend this.
At the time of posting, we've had 3 crashes in a 12 hour period. The details are:
1) Crash was related to tractoring objects.
2) Dunno, possibly corrupt character related triggering crash on logon or and number of player limits.
3) A memory excursion where FLserver suddenly uses all available memory (we kill it when it hits 2 gigs).
Proud member of "the most paranoid group of people in the community"