[DBNETLIB][ConnectionClient(SEDC.ClientHandshake()).] SSL

I set up a network load balancing environment for our webservers, and all
database connections work correctly after the converging completes
successfully, but after a few hours (actual time hasn't been determined), one
host in the NLB (and it's always the same one) will fail to connect to our
SQL Server 2005 database with the error
[DBNETLIB][ConnectionClient(SEDC.ClientHandshake()).] SSL. Here are the NLB
set up settings:

Mode: Unicast
NLB IP's: 3 public facing IP addresses

The SQL server is internal, with a firewall rule allowing traffic from each
webserver to access the database on port 1433 (this port is static).

Each node has a dedicated internal IP address within the DMZ.

Any ideas would be greatly appreciated.

Adam