=== modified file 'Mailman/Cgi/admin.py'
--- Mailman/Cgi/admin.py	2010-09-10 22:17:01 +0000
+++ Mailman/Cgi/admin.py	2011-04-14 23:07:45 +0000
@@ -187,13 +187,15 @@
         if not mlist.digestable and mlist.getDigestMemberKeys():
             doc.addError(
                 _('''You have digest members, but digests are turned
-                off. Those people will not receive mail.'''),
+                off. Those people will not receive mail.
+                Affected member(s) %r.''' % mlist.getDigestMemberKeys()),
                 tag=_('Warning: '))
         if not mlist.nondigestable and mlist.getRegularMemberKeys():
             doc.addError(
                 _('''You have regular list members but non-digestified mail is
                 turned off.  They will receive non-digestified mail until you
-                fix this problem.'''), tag=_('Warning: '))
+                fix this problem. Affected member(s) %r.''' %
+                mlist.getRegularMemberKeys()), tag=_('Warning: '))
         # Glom up the results page and print it out
         show_results(mlist, doc, category, subcat, cgidata)
         print doc.Format()