Es könnte ein DNS-Problem sein.
KDE-Start ohne Internetverbindung, vorher iptraf auf einer anderen Console gestartet liefert:
Tue Dec 30 18:35:14 2014; ******** IP traffic monitor started ********
Tue Dec 30 18:35:23 2014; UDP; lo; 64 bytes; from 127.0.0.1:44203 to 127.0.0.1:53
Tue Dec 30 18:35:23 2014; UDP; lo; 64 bytes; from 127.0.0.1:44203 to 127.0.0.1:53
Tue Dec 30 18:35:23 2014; UDP; eth0; 75 bytes; from 192.168.0.83:36345 to 199.7.91.13:53
Tue Dec 30 18:35:23 2014; UDP; eth0; 56 bytes; from 192.168.0.83:57796 to 199.7.91.13:53
Tue Dec 30 18:35:23 2014; UDP; eth0; 56 bytes; from 192.168.0.83:16547 to 192.203.230.10:53
Tue Dec 30 18:35:23 2014; UDP; eth0; 75 bytes; from 192.168.0.83:55885 to 192.203.230.10:53
Tue Dec 30 18:35:24 2014; UDP; eth0; 56 bytes; from 192.168.0.83:48596 to 192.33.4.12:53
Tue Dec 30 18:35:24 2014; UDP; eth0; 75 bytes; from 192.168.0.83:15143 to 192.33.4.12:53
Tue Dec 30 18:35:25 2014; UDP; eth0; 56 bytes; from 192.168.0.83:9674 to 202.12.27.33:53
Tue Dec 30 18:35:25 2014; UDP; eth0; 75 bytes; from 192.168.0.83:57579 to 202.12.27.33:53
Tue Dec 30 18:35:26 2014; UDP; eth0; 75 bytes; from 192.168.0.83:54438 to 192.36.148.17:53
Tue Dec 30 18:35:26 2014; UDP; eth0; 56 bytes; from 192.168.0.83:4164 to 192.36.148.17:53
Tue Dec 30 18:35:27 2014; UDP; eth0; 75 bytes; from 192.168.0.83:59436 to 192.5.5.241:53
Tue Dec 30 18:35:27 2014; UDP; eth0; 56 bytes; from 192.168.0.83:58465 to 192.5.5.241:53
Tue Dec 30 18:35:27 2014; UDP; eth0; 64 bytes; from 192.168.0.83:12074 to 198.41.0.4:53
Tue Dec 30 18:35:27 2014; UDP; eth0; 45 bytes; from 192.168.0.83:30001 to 198.41.0.4:53
Tue Dec 30 18:35:28 2014; UDP; lo; 64 bytes; from 127.0.0.1:44203 to 127.0.0.1:53
Tue Dec 30 18:35:28 2014; UDP; lo; 64 bytes; from 127.0.0.1:44203 to 127.0.0.1:53
Tue Dec 30 18:35:28 2014; UDP; eth0; 45 bytes; from 192.168.0.83:50713 to 128.63.2.53:53
Tue Dec 30 18:35:28 2014; UDP; eth0; 64 bytes; from 192.168.0.83:22356 to 128.63.2.53:53
Tue Dec 30 18:35:29 2014; UDP; eth0; 45 bytes; from 192.168.0.83:36757 to 192.228.79.201:53
Tue Dec 30 18:35:29 2014; UDP; eth0; 64 bytes; from 192.168.0.83:40685 to 192.228.79.201:53
Tue Dec 30 18:35:30 2014; UDP; eth0; 64 bytes; from 192.168.0.83:50410 to 192.112.36.4:53
Tue Dec 30 18:35:30 2014; UDP; eth0; 45 bytes; from 192.168.0.83:51146 to 192.112.36.4:53
Tue Dec 30 18:35:31 2014; UDP; eth0; 45 bytes; from 192.168.0.83:57732 to 193.0.14.129:53
Tue Dec 30 18:35:31 2014; UDP; eth0; 64 bytes; from 192.168.0.83:11305 to 193.0.14.129:53
Tue Dec 30 18:35:31 2014; UDP; eth0; 45 bytes; from 192.168.0.83:36683 to 192.58.128.30:53
Tue Dec 30 18:35:31 2014; UDP; eth0; 64 bytes; from 192.168.0.83:1864 to 192.58.128.30:53
Tue Dec 30 18:35:32 2014; UDP; eth0; 45 bytes; from 192.168.0.83:34156 to 199.7.83.42:53
Tue Dec 30 18:35:32 2014; UDP; eth0; 64 bytes; from 192.168.0.83:62731 to 199.7.83.42:53
Tue Dec 30 18:35:33 2014; UDP; lo; 64 bytes; from 127.0.0.1:53 to 127.0.0.1:44203
Tue Dec 30 18:35:33 2014; UDP; lo; 64 bytes; from 127.0.0.1:53 to 127.0.0.1:44203
Tue Dec 30 18:35:33 2014; UDP; lo; 52 bytes; from 127.0.0.1:34168 to 127.0.0.1:53
Tue Dec 30 18:35:33 2014; UDP; lo; 52 bytes; from 127.0.0.1:34168 to 127.0.0.1:53
Tue Dec 30 18:35:33 2014; UDP; eth0; 63 bytes; from 192.168.0.83:15778 to 199.7.83.42:53
Tue Dec 30 18:35:33 2014; UDP; eth0; 56 bytes; from 192.168.0.83:2834 to 199.7.83.42:53
Tue Dec 30 18:35:33 2014; UDP; eth0; 63 bytes; from 192.168.0.83:38267 to 192.33.4.12:53
Tue Dec 30 18:35:33 2014; UDP; eth0; 56 bytes; from 192.168.0.83:19967 to 192.33.4.12:53
Tue Dec 30 18:35:34 2014; UDP; eth0; 56 bytes; from 192.168.0.83:28338 to 199.7.91.13:53
Tue Dec 30 18:35:34 2014; UDP; eth0; 63 bytes; from 192.168.0.83:28996 to 199.7.91.13:53
Tue Dec 30 18:35:35 2014; UDP; eth0; 63 bytes; from 192.168.0.83:48076 to 192.203.230.10:53
Tue Dec 30 18:35:35 2014; UDP; eth0; 56 bytes; from 192.168.0.83:62150 to 192.203.230.10:53
Tue Dec 30 18:35:36 2014; UDP; eth0; 63 bytes; from 192.168.0.83:12157 to 202.12.27.33:53
Tue Dec 30 18:35:36 2014; UDP; eth0; 56 bytes; from 192.168.0.83:60446 to 202.12.27.33:53
Tue Dec 30 18:35:37 2014; UDP; eth0; 56 bytes; from 192.168.0.83:59977 to 198.41.0.4:53
Tue Dec 30 18:35:37 2014; UDP; eth0; 63 bytes; from 192.168.0.83:37562 to 198.41.0.4:53
Tue Dec 30 18:35:37 2014; UDP; eth0; 52 bytes; from 192.168.0.83:40982 to 192.228.79.201:53
Tue Dec 30 18:35:37 2014; UDP; eth0; 45 bytes; from 192.168.0.83:54631 to 192.228.79.201:53
Tue Dec 30 18:35:38 2014; UDP; lo; 52 bytes; from 127.0.0.1:34168 to 127.0.0.1:53
Tue Dec 30 18:35:38 2014; UDP; lo; 52 bytes; from 127.0.0.1:34168 to 127.0.0.1:53
Tue Dec 30 18:35:38 2014; UDP; eth0; 52 bytes; from 192.168.0.83:49668 to 192.5.5.241:53
Tue Dec 30 18:35:38 2014; UDP; eth0; 45 bytes; from 192.168.0.83:3275 to 192.5.5.241:53
Tue Dec 30 18:35:39 2014; UDP; eth0; 45 bytes; from 192.168.0.83:20620 to 128.63.2.53:53
Tue Dec 30 18:35:39 2014; UDP; eth0; 52 bytes; from 192.168.0.83:1838 to 128.63.2.53:53
Tue Dec 30 18:35:40 2014; UDP; eth0; 45 bytes; from 192.168.0.83:36440 to 192.36.148.17:53
Tue Dec 30 18:35:40 2014; UDP; eth0; 52 bytes; from 192.168.0.83:18040 to 192.36.148.17:53
Tue Dec 30 18:35:41 2014; UDP; eth0; 45 bytes; from 192.168.0.83:40105 to 192.112.36.4:53
Tue Dec 30 18:35:41 2014; UDP; eth0; 52 bytes; from 192.168.0.83:51514 to 192.112.36.4:53
Tue Dec 30 18:35:41 2014; UDP; eth0; 52 bytes; from 192.168.0.83:57612 to 192.58.128.30:53
Tue Dec 30 18:35:41 2014; UDP; eth0; 45 bytes; from 192.168.0.83:50136 to 192.58.128.30:53
Tue Dec 30 18:35:42 2014; UDP; eth0; 45 bytes; from 192.168.0.83:46865 to 193.0.14.129:53
Tue Dec 30 18:35:42 2014; UDP; eth0; 52 bytes; from 192.168.0.83:51643 to 193.0.14.129:53
Tue Dec 30 18:35:43 2014; UDP; lo; 52 bytes; from 127.0.0.1:53 to 127.0.0.1:34168
Tue Dec 30 18:35:43 2014; UDP; lo; 52 bytes; from 127.0.0.1:53 to 127.0.0.1:34168
Tue Dec 30 18:35:48 2014; UDP; eth0; 240 bytes; from 192.168.0.83:138 to 192.168.0.255:138
Tue Dec 30 18:36:12 2014; TCP; lo; 60 bytes; from 127.0.0.1:33012 to 127.0.0.1:6000; first packet (SYN)
Alles anzeigen
Da möchte irgendetwas die root-nameserver abklappern.
Der Eintrag
nameserver 192.168.0.100
in /etc/resolv.conf (192.168.0.100 ist der lokale Router) führt dazu, dass KDE ohne Internetverbindung schneller startet. Die Gedenkpause verschwindet alllerdings nicht, sondern halbiert sich lediglich auf 10 Sekunden. iptraf zeigt dann nur noch Zugriffe auf 192.168.0.100 auf Port 53, der dort auch offen ist. Diese 10 Sekunden möchte ich aber auch noch los werden, schließlich startete früher KDE 3.5.10 fast augenblicklich von der SSD.
Steht in der resolv.conf zusätzlich noch ein "search"-Eintrag, dauert die Gedenkpause wieder 20 Sekunden.