Can't upload a .po file to Pootle

[Bastien]

Hi all,

while trying to upload a .po file to Pootle, the server hangs then
outputs this error:

,----
| Bad Gateway!
| 
| The proxy server received an invalid response from an upstream server.
| 
| The proxy server could not handle the request POST /translate/fr/etoys/.
| 
| Reason: Error reading from remote server
| 
| If you think this is a server error, please contact the webmaster.
| Error 502
| dev.laptop.org
| Mon Jun 30 03:35:43 2008
| Apache/2.2.8 (Ubuntu) DAV/2 SVN/1.4.6 proxy_html/3.0.0 mod_ssl/2.2.8
| OpenSSL/0.9.8g mod_wsgi/1.3 Python/2.5.2a0 mod_perl/2.0.2 Perl/v5.8.8  
`----

Any idea why this happens?

Other question: the file I'm trying to upload is etoy.po -- how does the
system knows it's the french translation?  Should I upload etoys-fr.zip
instead?

Thanks for any advice,

PS: I've put the file here: http://lumiere.ens.fr/~guerry/etoys.po , in
case someone can upload it.

-- 
Bastien