Incomplete filedownloads with python

I have the following python code:

import urllib2
DIR = '/home/aaron/Desktop/aaron-file/media/'
LOC = DIR+'/'+bounty.title+'.mp3'

u = urllib2.urlopen(url, 'rb')
localFile = open(LOC, 'wb')
localFile.write(u.read())
localFile.close()
u.close()

      

        
        
        
      

    

It only creates small (about 60K of files) files that work correctly to stop suddenly. When I boot from firefox (copy and paste the same url) I get full size files (about 2MB).

I am running 32 bit ubuntu.

UPDATE: I believe this can be a problem when the length of the http content is inaccurate. How then will I ignore / set different lengths.

Thank.