obspy0.9 problems on raspberry pi

I have just installed obspy0.9 on a raspberry pi ARM based linux system using the ObsPy apt repository.
The installation appeared to go Ok however when i try using the system I get an error

pi@raspberrypi ~/bud/UK/TEST4 $ python
Python 2.7.3 (default, Jan 13 2013, 11:20:46)
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.

from obspy import read

/usr/lib/python2.7/dist-packages/obspy/__init__.py:7: RuntimeWarning: Parent module 'obspy' not found while handling absolute import
  # Tobias Megies
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: Loaded module obspy not found in sys.modules

from obspy.core import read

/usr/lib/python2.7/dist-packages/obspy/__init__.py:7: RuntimeWarning: Parent module 'obspy' not found while handling absolute import
  # Tobias Megies
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: Loaded module obspy not found in sys.modules

quit()

The previous version of obspy was working fine on this platform and when I install obspy0.90 on an x86 linux system using the same procedure that works OK

Paul Denton
UK school seismology project leader
British Geological Survey
Keyworth
Nottingham, UK
NG12 5GG
tel +44 (0)115 9363480
email pdenton@bgs.ac.uk
web www.bgs.ac.uk/ssp

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Hi Paul,

are you running the official Raspbian wheezy hardfloat distribution?
I noticed that your Python says something slightly different (2.7.3), I
have (2.7.3rc2).

What does "uname -a" and "lsb_release -d" say?
I get:
Linux pi 3.6.11+ #474 PREEMPT Thu Jun 13 17:14:42 BST 2013 armv6l GNU/Linux
Description: Debian GNU/Linux 7.1 (n/a)

I have tested the deb package on my Raspberry and only a few image tests
(which strongly depend on matplotlib version etc.) fail:
http://tests.obspy.org/12510/

I just tried some basic commands and for me it works.

It seems you are running a different Linux image/distribution..

best,
Tobias