Would you please check if the ip address shown in output of "ifconfig -a" cmd and /etc/hosts file are in sync? E.g. the following shows a conflict in the ip addresses (192.168.80.123 vs 192.168.80.128):
=== /etc/hosts ===
# The following line might be present 192.168.80.123 myMachine
maMachine = hostname
=== ifconfig -a ===
eth0 Link encap:Ethernet HWaddr 00:0C:293:65:6F
inet addr:192.168.80.128 Bcast:192.168.80.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fed3:656f/64 Scopeink
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1