diff --git a/eprints1.pl b/eprints1.pl
index f3378641e5e1d08e130b87ec7406c23342bd6522..59be59a14124a5dd7d493bdf7982fc462be80956 100755
--- a/eprints1.pl
+++ b/eprints1.pl
@@ -4756,9 +4756,10 @@ sub policies_stats
        if ($context eq 'ot2ut-test') { $context= 'test'; }
     elsif ($context eq 'ot2ut-entw') { $context= 'entw'; }
     elsif ($context eq 'ot2ut-prod') { $context= 'prod'; }
-    # else ... this should not happen
+    elsif ($context =~ /deleted/) {} # ignore
+    else { die ("invalid context $context"); } # ... this should not happen, unless someone writes an undefined context into the sync collection
 
-    my $block_nr= int($eprint_id/100);
+    my $block_nr=     int($eprint_id/100);
     my $metablock_nr= int($block_nr/100);
     $totals{$context}->{cnt_total}++;
     $blocks[$block_nr]->{$context}->{cnt_total}++;
@@ -4816,13 +4817,13 @@ sub policies_stats
        map { $row_utp->{$_} } qw(eprint_id eprint_status date_sperre einverstaendnis lastmod full_text_status sperre cnt_errors cnt_warnings errors warnings docs ut_public urn doi ac_nummer);
 
     $eprint_id += 0;
-    my $block_nr= int($eprint_id/100);
+    my $block_nr=     int($eprint_id/100);
     my $metablock_nr= int($block_nr/100);
     $totals{othes}->{cnt_total}++;
     $blocks[$block_nr]->{othes}->{cnt_total}++;
     $metablocks[$metablock_nr]->{othes}->{cnt_total}++;
 
-    $eprint_ids[$eprint_id]->{othes}= 1;
+    $eprint_ids[$eprint_id]->{othes}= $lastmod;
 
     my ($cnt_docs, $cnt_public, $cnt_restricted, $cnt_embargo)=
        map { $docs->{$_} } qw(cnt_docs cnt_public cnt_restricted cnt_embargo);
@@ -4926,7 +4927,7 @@ sub policies_stats
   }
 
 # print __LINE__, " working: cctab: ", Dumper($cctab);
-  # BEGIN annotations
+ { # BEGIN annotations
   my @s1= qw(archive FALSE FALSE no restricted 1 1 0 0 no);
   push (@s1, qw(0 0 0 0 1))    if ($flag_add_utheses_policies);
   push (@s1, qw(present NULL)) if ($flag_add_identifiers);
@@ -5077,7 +5078,7 @@ sub policies_stats
     $b6c->{annotation}= { bgcolor => 'pink', note => 'Volltext restricted, kein Embargo' };
     # print __LINE__, " special bucket found: ", Dumper($b6b);
   }
-  # END annotations
+ } # END annotations
 
   my $bucket_cnt= $cctab->show_tsv(['othes', @contexts], 'counters.tsv');
   my $now= scalar localtime(time());
@@ -5087,6 +5088,7 @@ sub policies_stats
     $msg_html= '<p><font color="red">' . $msg . '</font></p>';
   }
 
+  my %stale_uploads= ();
   my $idx_html= join('/', $base_path, 'index.html');
   open(IDX, '>:utf8', $idx_html);
   print IDX <<"EOX";
@@ -5196,12 +5198,13 @@ EOX
 </style>
 </head>
 <body>
+<p>last refreshed: $now</p>
 <table border="1">
 <tr>
-  <th width="100px">eprint_id</th>
-  <th width="100px">entw</th>
-  <th width="100px">test</th>
-  <th width="100px">prod</th>
+  <th x_width="100px" colspan="2" width="25%">eprint_id</th>
+  <th x_width="100px" colspan="2" width="25%">entw</th>
+  <th x_width="100px" colspan="2" width="25%">test</th>
+  <th x_width="100px" colspan="2" width="25%">prod</th>
 </tr>
 EOX
 
@@ -5213,18 +5216,24 @@ EOX
         my $x= $eprint_ids[$eprint_id];
         next unless (defined ($x));
 
-        print BLOCK "<tr>\n  <td><a href=\"https://othes.univie.ac.at/$eprint_id/\" target=\"othes\">$eprint_id</a></td>\n";
+        my $lastmod= $x->{othes};
+        print BLOCK <<EOX;
+<tr>
+  <td><a href="https://othes.univie.ac.at/$eprint_id/" target="othes">$eprint_id</a>
+  <td>$lastmod</td>
+</td>
+EOX
 
         foreach my $context (qw(entw test prod))
         {
           unless (exists ($x->{$context}))
           {
-            print BLOCK "  <td>&nbsp;</td>\n";
+            print BLOCK "  <td>&nbsp;</td><td>&nbsp;</td>\n";
             next;
           }
 
           my $c= $x->{$context};
-          my ($error_code, $utheses_id, $errors)= map { $c->{$_} } qw(error_code utheses_id errors);
+          my ($error_code, $utheses_id, $errors, $ts_upload)= map { $c->{$_} } qw(error_code utheses_id errors ts_upload);
           if ($error_code eq 'ok')
           {
             my $link;
@@ -5234,11 +5243,16 @@ EOX
           # elsif ($context eq 'prod') { $link= 'https://utheses-admin-ui-utheses-prod.cprod.univie.ac.at/client#/view/document/utheses/' . $utheses_id . '/'; }
             elsif ($context eq 'prod') { $link= 'https://utheses-admin-ui-utheses-prod.cprod.univie.ac.at/client#/detail/' . $utheses_id . '/'; }
 
-            print BLOCK "  <td bgcolor=\"lightgreen\"><a href=\"$link\" target=\"$context\">$utheses_id</a></td>\n";
+            my $ts_color= 'lightgreen';
+            if ($ts_upload lt $lastmod) { $ts_color= 'lightpink'; push (@{$stale_uploads{$context}}, $eprint_id); }
+            print BLOCK <<EOX;
+  <td bgcolor="lightgreen"><a href="$link" target="$context">$utheses_id</a></td>
+  <td bgcolor="$ts_color">$ts_upload</td>
+EOX
           }
           else
           {
-            print BLOCK "  <td bgcolor=\"lightpink\">$error_code ", Dumper($errors), "</td>\n";
+            print BLOCK "  <td bgcolor=\"lightpink\">$error_code ", Dumper($errors), "</td><td>$ts_upload</td>\n";
           }
         }
         print BLOCK "</tr>\n";
@@ -5262,6 +5276,7 @@ EOX
 
   }
 
+  # print summaries
   my $total_othes= $totals{othes}->{cnt_total};
   print IDX "<tr>\n  <td>total</td>\n  <td>", $total_othes, "</td>\n";
   foreach my $context (qw(entw test prod))
@@ -5276,7 +5291,34 @@ EOX
   print IDX "</tr>\n";
 
   print IDX "</table>\n";
+
+  # print statistics
   # print __LINE__, " cctab: ", Dumper($cctab);
+  
+  my @stale_contexts= sort keys %stale_uploads;
+  if (@stale_contexts)
+  {
+    print IDX "<h2>stale uploads</h2>\n";
+    my $last_block;
+    foreach my $ctx (@stale_contexts)
+    {
+      my $stu= $stale_uploads{$ctx};
+      print IDX "<h3>stale uploads context $ctx</h3>\n";
+      foreach my $eprint_id (@$stu)
+      {
+        my $block= int($eprint_id/100);
+        if ($block != $last_block)
+        {
+          print IDX "</p>\n" if (defined ($last_block));
+          print IDX "<p><b><a href=\"block_${block}.html\" target=\"blocks\">Block $block</a></b>:";
+          $last_block= $block;
+        }
+        print IDX ' ', $eprint_id;
+      }
+      print IDX "</p>\n" if (defined ($last_block));
+    }
+  }
+
   print IDX "<h2>errors</h2>\n". Dumper(\%cnt_errors);
   print IDX "<h2>warnings</h2>\n". Dumper(\%cnt_warnings);