thanks for fast reply, this is error log:

~ $ /opt/netmon/bin/netmon
ERROR:dbus.proxies:Introspect error on :1.19:/com/nokia/phone/net: dbus.exceptions.DBusException: rpc.Error: object /com/nokia/phone/net doesn't have interface org.freedesktop.DBus.Introspectable
Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python2.5/threading.py", line 486, in __bootstrap_inner
self.run()
File "/media/mmc1/python/netmon_build/src/opt/netmon/bin/netmongui.py", line 284, in run
self.update_cell_info()
File "/media/mmc1/python/netmon_build/src/opt/netmon/bin/netmongui.py", line 222, in update_cell_info
self.set_nettype(nettype)
File "/media/mmc1/python/netmon_build/src/opt/netmon/bin/netmongui.py", line 101, in set_nettype
self.cell['cellinfo']['type']['value'].set_text(network_type)
UnboundLocalError: local variable 'network_type' referenced before assignment