Your routing table should look like this:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
130.132.52.0 * 255.255.255.0 U 0 0 272 eth0
127.0.0.0 * 255.0.0.0 U 0 0 2 lo
default sloth.net.yale. 0.0.0.0 UG 0 0 454 eth0
(with appropriate changes to the 130.132.52.0 number to reflect your subnet).
If it does not, your network isn't set up right; make sure especially that
your gateway settings are correct.
- Mike