Since quite some time I had been experiencing slow DNS lookups on some linux boxes. Today I finally got around to fixing it.
Symptoms : KDE fails to load google/wikipedia sometimes. firefox too, less often.
ping was the main tool in this case.
What I found was that
got an IP to ping very fast, however before anything appeared onscreen, it took up to 5 seconds. Pinging the IP address however returned immediately.
On a hunch, I tried disabling...