diff -r b758351d191f -r cc9b7e14412b web/lib/django/contrib/comments/views/utils.py
--- a/web/lib/django/contrib/comments/views/utils.py	Wed May 19 17:43:59 2010 +0200
+++ b/web/lib/django/contrib/comments/views/utils.py	Tue May 25 02:43:45 2010 +0200
@@ -39,7 +39,7 @@
         if 'c' in request.GET:
             try:
                 comment = comments.get_model().objects.get(pk=request.GET['c'])
-            except ObjectDoesNotExist:
+            except (ObjectDoesNotExist, ValueError):
                 pass
         return render_to_response(template,
             {'comment': comment},