diff --git a/src/calibre/ebooks/mobi/mobiml.py b/src/calibre/ebooks/mobi/mobiml.py
index ffb19d5fce..40ad5e9e78 100644
--- a/src/calibre/ebooks/mobi/mobiml.py
+++ b/src/calibre/ebooks/mobi/mobiml.py
@@ -102,6 +102,7 @@ class MobiMLizer(object):
     def __call__(self, oeb, context):
         oeb.logger.info('Converting XHTML to Mobipocket markup...')
         self.oeb = oeb
+        self.log = self.oeb.logger
         self.opts = context
         self.profile = profile = context.dest
         self.fnums = fnums = dict((v, k) for k, v in profile.fnums.items())
@@ -118,6 +119,10 @@ class MobiMLizer(object):
         del oeb.guide['cover']
         item = oeb.manifest.hrefs[href]
         if item.spine_position is not None:
+            self.log.warn('Found an HTML cover,', item.href, 'removing it.',
+                    'If you find some content missing from the output MOBI, it '
+                    'is because you misidentified the HTML cover in the input '
+                    'document')
             oeb.spine.remove(item)
             if item.media_type in OEB_DOCS:
                 self.oeb.manifest.remove(item)
diff --git a/src/calibre/trac/bzr_commit_plugin.py b/src/calibre/trac/bzr_commit_plugin.py
index 7e5a1367cb..c596425a68 100644
--- a/src/calibre/trac/bzr_commit_plugin.py
+++ b/src/calibre/trac/bzr_commit_plugin.py
@@ -31,8 +31,11 @@ class cmd_commit(_cmd_commit):
         summary = ''
         raw = urllib.urlopen('https://bugs.launchpad.net/calibre/+bug/' +
                 bug).read()
-        h1 = html.fromstring(raw).xpath('//h1[@id="edit-title"]')[0]
-        summary = html.tostring(h1, method='text', encoding=unicode).strip()
+        try:
+            h1 = html.fromstring(raw).xpath('//h1[@id="edit-title"]')[0]
+            summary = html.tostring(h1, method='text', encoding=unicode).strip()
+        except:
+            summary = 'Private bug'
         print 'Working on bug:', summary
         if summary:
             msg = msg.replace('#%s'%bug, '#%s (%s)'%(bug, summary))