nothing for com.nokia.wps_ui, but I got one more message than the last post, so I'll contribute this as well:

signal sender=org.freedesktop.DBus -> dest=(null destination) serial=344 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=NameOwnerChanged
string "com.nokia.eap"
string ""
string ":1.198"

signal sender=:1.198 -> dest=(null destination) serial=6 path=/com/nokia/eap/signal; interface=com.nokia.eap.signal; member=wps_success
array [
string "4130f207-a1c1-419a-9d97-344b43fde6c1"
]

signal sender=org.freedesktop.DBus -> dest=(null destination)
serial=347 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=NameOwnerChanged
string "com.nokia.eap"
string ":1.198"
string ""

signal sender=org.freedesktop.DBus -> dest=(null destination) serial=352 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=NameOwnerChanged
string "com.nokia.eap"
string ""
string ":1.201"

signal sender=:1.201 -> dest=(null destination) serial=8 path=/com/nokia/eap/signal; interface=com.nokia.eap.signal; member=auth_status
uint32 4