initialisation of USRP

hello guys,
i am cyrrently working of software designed radio and i got stuck while installing my USRP. i had already installed the gnu radio 3.3 varsion and currently i am working on linux.
i am basically trying to run some examples from the location
Desktop/ucla_zigbee_phy/src/examples# ./cc1k_rxtest.py

and i am getting the following error...


Traceback (most recent call last):
File "./cc1k_rxtest.py", line 44, in <module>
from gnuradio import usrp
File "/usr/lib/python2.6/dist-packages/gnuradio/usrp/__init__.py", line 25, in <module>
from usrp_swig import *
File "/usr/lib/python2.6/dist-packages/gnuradio/usrp/usrp_swig.py", line 24, in <module>
_usrp_swig = swig_import_helper()
File "/usr/lib/python2.6/dist-packages/gnuradio/usrp/usrp_swig.py", line 20, in swig_import_helper
_mod = imp.load_module('_usrp_swig', fp, pathname, description)
ImportError: /usr/lib/libgnuradio-usrp.so.0: undefined symbol: _ZN7db_base4dbidEv


i searched on internet alot but didnt find anything that could help me out...
please suggest something...as soon as possible