After almost two months, I have finally gotten around to replacing the final piece of computer equipment damaged in the lightning strike, my Gigabit switch.
My new switch is a Netgear ProSafe Gigabit Ethernet Desktop Switch.
Although the old switch was also a Netgear, this is something of an upgrade, being designed to run with less power (ergo, less heat, which happens to be quite important to me as things get hot in here when my machines are all running). As far as longer term stability goes, I will try to remember to report on this switch after a few months have passed.
On a side note, I rather prefer its heavy metal casing to the plastic case of my old switch.