Index: includes/Block.php
===================================================================
--- includes/Block.php  (revision 47549)
+++ includes/Block.php  (working copy)
@@ -105,6 +105,7 @@
                        && $this->mHideName == $block->mHideName
                        && $this->mBlockEmail == $block->mBlockEmail
                        && $this->mAllowUsertalk == $block->mAllowUsertalk
+                       && $this->mReason == $block->mReason
                );
        }