Version: (using KDE 4.3.0) OS: MS Windows Installed from: MS Windows There is no Jabber/XMPP protocol in the messaging service list.
I have the same problem using the 4.3.0 MSVC packages: The jabber plugin (KDE\lib\kde4\kopete_jabber.dll) is missing. (Using the MinGW or MinGW4 packages the plugin is available. I can create a jabber account but it doesn't connect.)
Quite an old bug report, but using the 4.4.4 MSVC packages Kopete & Jabber work perfectly for me now. (Windows XP)
*** This bug has been marked as a duplicate of bug 184246 ***