Version:            (using KDE 4.3.0)
Compiler:          most likely gcc (GCC) 4.4.1 20090725 (Red Hat 4.4.1-2) 
OS:                Linux
Installed from:    Fedora RPMs

With both KDE 4.2 and 4.3, as provided by Fedora 11, I have tried to connect to a home network secured with WPA2 Personal (PSK) + TKIP / AES. When prompted for a password, I entered the correct password. The Network Management plasmoid, however, shows no sign of making a connection to the network, and I never make the connection. However, the Gnome nm-applet (which I usually use under KDE as well) connects perfectly. Here are the information files generated by running the command listed on the KDE Network Management debugging wiki page (after formatting and changing my network name):

qdbus --system --literal org.freedesktop.NetworkManagerUserSettings /org/freedesktop/NetworkManagerSettings/0 org.freedesktop.NetworkManagerSettings.Connection.GetSettings

KDE Plasma Network Management:
a{sa{sv}} (==802-11-wireless==
band: bg
mode: infrastructure
security: 802-11-wireless-security
ssid: {118, 101, 99, 107, 97, 116, 105, 109, 101, 115, 116}
==802-11-wireless-security==
auth-alg: open
key-mgmt: wpa-psk
wep-tx-keyidx: 0
==connection==
autoconnect: false
id: anetwork
type: 802-11-wireless
uuid: {fefa217f-15fd-4cff-8fd6-bef634c72e72}
==ipv4==
dns-search:
method: auto
)

nm-applet:
a{sa{sv}} (==802-11-wireless= =
mode = infrastructure
seen-bssids = {"00:1c:10:3b:71:47"}
ssid = {118, 101, 99, 107, 97, 116, 105, 109, 101, 115, 116}
security = 802-11-wireless-security
==802-11-wireless-security==
key-mgmt = wpa-psk
==connection==
uuid = 35c5e6ba-841d-48a0-9798-631843f1c7f0
id = Auto veckatimest
type = 802-11-wireless
timestamp = 1251255669
)