Index: branches/release-30/lib/MT.pm.pre
===================================================================
--- branches/release-30/lib/MT.pm.pre (revision 1372)
+++ branches/release-30/lib/MT.pm.pre (revision 1402)
@@ -1184,5 +1184,5 @@
     $job->funcname('MT::Worker::Sync');
     $job->uniqkey( $fi->id );
-    $job->coalesce( $$ . ':' . ( time - ( time % 100 ) ) );
+    $job->coalesce( ( $fi->blog_id || 0 ) . ':' . $$ . ':' . ( time - ( time % 10 ) ) );
     MT::TheSchwartz->insert($job);
 }