====== Network Performance Issues (Linux) ======

Some things to try when you have network performance problems in Linux.

===== Slow DNS Lookups =====

<WRAP center round alert 60%>
Update: The problem returned, even with the nsswitch.conf change in place. m(
</WRAP>

Symptoms: On some (not necessarily all) websites, you'll see a delay of several seconds on the "Looking up..." message in Firefox.

I first tried the obvious step of checking/changing my DNS server addresses, but this didn't help.  I resolved the issue by changing the "hosts" line in /etc/nsswitch.conf.

<code properties>
#hosts:          files mdns4_minimal [NOTFOUND=return] dns  # original line
hosts:          files dns  # changed to this
</code>