Index: /trunk/src/VBox/Frontends/VirtualBox/src/runtime/UIAddDiskEncryptionPasswordDialog.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/runtime/UIAddDiskEncryptionPasswordDialog.cpp	(revision 54755)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/runtime/UIAddDiskEncryptionPasswordDialog.cpp	(revision 54756)
@@ -269,4 +269,18 @@
             break;
         }
+        case Qt::ToolTipRole:
+        {
+            /* We are generating tool-tip here and not in retranslateUi() because of the tricky plural form handling,
+             * but be quiet, it's safe enough because the tool-tip being re-acquired every time on mouse-hovering. */
+            const QStringList encryptedMediums = m_encryptedMediums.values(m_encryptionPasswords.keys().at(index.row()));
+            return tr("Used by the following %n hard-drive(s):<br>%1",
+                      "This text is never used with n == 0. "
+                      "Feel free to drop the %n where possible, "
+                      "we only included it because of problems with Qt Linguist "
+                      "(but the user can see how many hard drives are in the tool-tip "
+                      "and doesn't need to be told).",
+                      encryptedMediums.size())
+                      .arg(encryptedMediums.join("<br>"));
+        }
         case Qt::TextAlignmentRole:
         {