[master] "APIError: 500" when submitting review on utf8 appnames

Binary package hint: software-center

I tried to submit a review for deja-dup and I got this the following traceback in the console. This appears to be very similar to bug 709024, but I don't get the encoding error. Nonetheless, perhaps this is still due to encoding errors somewhere in the pipeline for the phrase "Déjà Dup"?

ERROR:root:submit_review
Traceback (most recent call last):
  File "/usr/share/software-center/submit_review.py", line 246, in _submit_reviews_if_pending
    res = self.rnrclient.submit_review(review=piston_review)
  File "/usr/lib/python2.7/dist-packages/piston_mini_client/validators.py", line 47, in wrapper
    return func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/piston_mini_client/__init__.py", line 16, in wrapper
    body = func(*args, **kwargs)
  File "/usr/share/software-center/softwarecenter/backend/rnrclient_pristine.py", line 72, in submit_review
    content_type='application/json')
  File "/usr/lib/python2.7/dist-packages/piston_mini_client/__init__.py", line 180, in _post
    headers=headers, scheme=scheme)
  File "/usr/lib/python2.7/dist-packages/piston_mini_client/__init__.py", line 205, in _request
    body = handler.handle(response, body)
  File "/usr/lib/python2.7/dist-packages/piston_mini_client/failhandlers.py", line 54, in handle
    raise APIError('%s: %s' % (response['status'], response), body)
APIError: 500: {'status': '500', 'via': '1.1 reviews.staging.ubuntu.com', 'transfer-encoding': 'chunked', 'vary': 'Authorization,Accept-Encoding', 'server': 'Apache/2.2.14 (Ubuntu)', 'connection': 'close', 'date': 'Tue, 01 Feb 2011 15:08:50 GMT', 'content-type': 'text/html; charset=utf-8'}

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: software-center 3.1.15 [modified: usr/share/software-center/softwarecenter/backend/rnrclient_pristine.py usr/share/software-center/softwarecenter/db/reviews.py]
ProcVersionSignature: Ubuntu 2.6.38-1.28-generic 2.6.38-rc2
Uname: Linux 2.6.38-1-generic x86_64
Architecture: amd64
Date: Tue Feb 1 10:12:36 2011
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_GB.utf8
 LC_MESSAGES=en_US.utf8
 SHELL=/bin/bash
SourcePackage: software-center