jython problem importing a py file

[didier.prophete at gmail.com]

Ok, so I know this is probably a common jython error, but somehow I
can't seem to find an answer to this trivial problem.

Ok, I have the following (simple) directory structure:
$TOP/
    __init__.py
    py_dir/
        __init__.py
        util.py

I have:
  PYTHONPATH=$TOP
  CLASSPATH=$TOP

I am now trying to execute the simple python/jython statement: "import
py_dir.util"
If I do a 'cd $TOP' first, then this works fine in python and jython.

But if I do a 'cd $TOP/py_dir', then it still works fine in python, but
jython gives me:
    Traceback (innermost last):
       File "<console>", line 1, in ?
    ImportError: No module named util

I tried everything I could think of (playing with the __init__.py, the
PYTHONCLASS, the CLASSPATH), but nothing seems to work...

I am doing something wrong here ? 

-Didier