Comment 1 for bug 75098

Tim Ri pointed out that I should attach some sites that apear slow for me so you could test them.

Also the most probable cause that I experience konqueror slow is that my ISP DNS doesnt support IPv6.

So a easy GUI way if setting KDE_NO_IPv6 environment setting would perhaps make people more aware of the DNS issue.

Anyways here are my findings:
Slow sites in konqueror (without nscd) measured during refreshing the page
http://tv4.se/ 38 sec
http://www.cnn.com/ 23 sec
http://svt.se/ 35 sec
http://www.youtube.com/ 15 sec
http://www.kde-apps.org/ 15 sec
http://formula1.com/ 38 sec
http://shots.osdir.com/index.php?distro=451 19 sec

Same sites with nscd running, same environment, and measured with page refresh
http://tv4.se/ 12 sec
http://www.cnn.com/ 15 sec
http://svt.se/ 15 sec
http://www.youtube.com/ 9 sec
http://www.kde-apps.org/ 8 sec
http://formula1.com/ 17 sec
http://shots.osdir.com/index.php?distro=451 4 sec <-- notice this result !!! compared to 19 sec

Same sites with nscd running and KDE_NO_IPv6=true, same environment and measured with page refresh
http://tv4.se/ 10 sec
http://www.cnn.com/ 11 sec
http://svt.se/ 11 sec
http://www.youtube.com/ 5 sec
http://www.kde-apps.org/ 4 sec
http://formula1.com/ 11 sec
http://shots.osdir.com/index.php?distro=451 2 sec <-- even better

Same sites without nscd running but with KDE_NO_IPv6=true, same environment and measured with page refresh
http://tv4.se/ 14 sec
http://www.cnn.com/ 13 sec
http://svt.se/ 19 sec
http://www.youtube.com/ 9 sec
http://www.kde-apps.org/ 4 sec
http://formula1.com/ 15 sec
http://shots.osdir.com/index.php?distro=45 9 sec

Also the statistics of nscd --statistic
....
passwd cache:

            yes cache is enabled
            yes cache is persistent
            yes cache is shared
            211 suggested size
         216064 total data pool size
           1728 used data pool size
            600 seconds time to live for positive entries
             20 seconds time to live for negative entries
          20094 cache hits on positive entries
              0 cache hits on negative entries
            322 cache misses on positive entries
              5 cache misses on negative entries
             98% cache hit rate
             18 current number of cached values
             58 maximum number of cached values
              1 maximum chain length searched
              0 number of delays on rdlock
              0 number of delays on wrlock
              0 memory allocations failed
            yes check /etc/passwd for changes
....

Hope it helps..

/ Fredrik