I use Mandriva 2007. When i start my system i see window with description: "could not open network socket", info about KDE error, and "please check dcopserver". I ask at many forum's and people don't know this problem. After click "ok" my system is normaly starting but in console i see this:

"pawel@localhost ~]$ su root
[root@localhost pawel]# konqueror
DCOPClient::attachInternal. Attach failed Could not open network socket
---------------------------------
It looks like dcopserver is already running. If you are sure
that it is not already running, remove /root/.DCOPserver_localhost__0
and start dcopserver again.
---------------------------------

DCOPClient::attachInternal. Attach failed Could not open network socket
DCOPClient::attachInternal. Attach failed Could not open network socket
WARNING: DCOP communication problem!
kdeinit: Communication error with launcher. Exiting!
DCOPClient::attachInternal. Attach failed Could not open network socket
DCOPClient::attachInternal. Attach failed Could not open network socket
DCOPClient::attachInternal. Attach failed Could not open network socket
DCOPClient::attachInternal. Attach failed Could not open network socket
DCOPClient::attachInternal. Attach failed Could not open network socket
DCOPRef::call(): no DCOP client or client not attached error
DCOPClient::attachInternal. Attach failed Could not open network socket
DCOPClient::attachInternal. Attach failed Could not open network socket
DCOPClient::attachInternal. Attach failed Could not open network socket
DCOPClient::attachInternal. Attach failed Could not open network socket
DCOPRef::call(): no DCOP client or client not attached error
DCOPClient::attachInternal. Attach failed Could not open network socket
DCOPClient::attachInternal. Attach failed Could not open network socket
DCOPClient::attachInternal. Attach failed Could not open network socket
DCOPClient::attachInternal. Attach failed Could not open network socket
DCOPClient::attachInternal. Attach failed Could not open network socket
DCOPRef::call(): no DCOP client or client not attached error
kio_http_debug: WARNING: (3841) Can't communicate with kded_kcookiejar!
kio (kioslave): WARNING: Can't communicate with kded_kpasswdserver!
kio_http_debug: WARNING: (3841) Can't communicate with kded_kcookiejar!
DCOPClient::attachInternal. Attach failed Could not open network socket
kio (KIOConnection): ERROR: Header read failed, errno=104
kio (KIOConnection): ERROR: Header has invalid size (-1)"

Please help me!

As suggested, see whether dcopserver is running: "ps aux|grep dcopserver". If not, following the suggestion, as root, "rm -rf /root/.DCOPserver_localhost__0". Then try again to call konqueror.

Thx but...

[pawel@localhost ~]$ su root
[root@localhost pawel]# ps aux|grep dcopserver
pawel 3557 0.0 0.4 25264 2656 ? S 17:11 0:00 dcopserver [kdeinit] --nosid
root 3871 0.0 0.1 2196 868 pts/5 S+ 17:13 0:00 grep --color dcopserver
[root@localhost pawel]# rm -rf /root/.DCOPserver_localhost__0
[root@localhost pawel]# ps aux|grep dcopserver
pawel 3557 0.0 0.4 25264 2656 ? S 17:11 0:00 dcopserver [kdeinit] --nosid
root 3879 0.0 0.1 2192 764 pts/5 R+ 17:14 0:00 grep --color dcopserver
[root@localhost pawel]#

I'm not understand this problem When i start system after a few hours i see this stupid window (could not open network socket) but when i reboot - problem is disappears.