diff --git a/mod/chat/db/migrate2utf8.php b/mod/chat/db/migrate2utf8.php
index f342f71894f..bae2eb4a4f6 100755
--- a/mod/chat/db/migrate2utf8.php
+++ b/mod/chat/db/migrate2utf8.php
@@ -21,7 +21,7 @@ function migrate2utf8_chat_name($recordid){
 /// We are going to use textlib facilities
     $textlib = textlib_get_instance();
 /// Convert the text
-    $result = $textlib->convert($assignment->name, $fromenc);
+    $result = $textlib->convert($chat->name, $fromenc);
 
     $newchat = new object;
     $newchat->id = $recordid;
@@ -53,7 +53,7 @@ function migrate2utf8_chat_intro($recordid){
 /// We are going to use textlib facilities
     $textlib = textlib_get_instance();
 /// Convert the text
-    $result = $textlib->convert($assignment->intro, $fromenc);
+    $result = $textlib->convert($chat->intro, $fromenc);
 
     $newchat = new object;
     $newchat->id = $recordid;
diff --git a/mod/forum/db/migrate2utf8.xml b/mod/forum/db/migrate2utf8.xml
index 9859ffde2b3..facbd19f8d4 100755
--- a/mod/forum/db/migrate2utf8.xml
+++ b/mod/forum/db/migrate2utf8.xml
@@ -46,7 +46,7 @@
                  AND fp.id = RECORDID
           </SQL_DETECT_COURSE>
         </FIELD>
-        <FIELD name="attachment" method="NO_CONV" type="varchar" length="0" />
+        <FIELD name="attachment" method="NO_CONV" type="varchar" length="100" />
       </FIELDS>
     </TABLE>
     <TABLE name="forum">
diff --git a/mod/glossary/db/migrate2utf8.xml b/mod/glossary/db/migrate2utf8.xml
index b6739b174df..2394d437643 100755
--- a/mod/glossary/db/migrate2utf8.xml
+++ b/mod/glossary/db/migrate2utf8.xml
@@ -2,7 +2,7 @@
   <TABLES>
     <TABLE name="glossary_entries">
       <FIELDS>
-        <FIELD name="concept" method="PLAIN_SQL_UPDATE" type="varchar" length="255">
+        <FIELD name="concept" method="PLAIN_SQL_UPDATE" type="varchar" length="255" dropindex="concept" addindex="concept (concept(255))">
           <SQL_DETECT_USER>
            SELECT ge.userid
            FROM {$CFG->prefix}glossary_entries ge
diff --git a/mod/hotpot/db/migrate2utf8.xml b/mod/hotpot/db/migrate2utf8.xml
index 0c0d6b95905..872755c96f4 100755
--- a/mod/hotpot/db/migrate2utf8.xml
+++ b/mod/hotpot/db/migrate2utf8.xml
@@ -24,7 +24,7 @@
     </TABLE>
     <TABLE name="hotpot_questions">
       <FIELDS>
-        <FIELD name="name" method="PHP_FUNCTION" type="varchar" length="255">
+        <FIELD name="name" method="PHP_FUNCTION" type="varchar" length="255" dropindex="hotpot_questions_name_idx" addindex=" hotpot_questions_name_idx (name(20))">
           <PHP_FUNCTION>
             migrate2utf8_hotpot_questions_name(RECORDID)
           </PHP_FUNCTION>
diff --git a/mod/lesson/db/migrate2utf8.xml b/mod/lesson/db/migrate2utf8.xml
index 27697fb9b4c..480bcb7590f 100755
--- a/mod/lesson/db/migrate2utf8.xml
+++ b/mod/lesson/db/migrate2utf8.xml
@@ -1,17 +1,17 @@
 <DBMIGRATION type="mod/lesson" VERSION="2005120100">
   <TABLES>
-    <TABLE name="lesson_attempt">
+    <TABLE name="lesson_attempts">
       <FIELDS>
         <FIELD name="useranswer" method="PLAIN_SQL_UPDATE" type="text" length="0">
           <SQL_DETECT_USER>
            SELECT la.userid
-           FROM {$CFG->prefix}lesson_attempt la
+           FROM {$CFG->prefix}lesson_attempts la
            WHERE la.id=RECORDID
           </SQL_DETECT_USER>
           <SQL_DETECT_COURSE>
            SELECT l.course
            FROM {$CFG->prefix}lesson l,
-                {$CFG->prefix}lesson_attempt la
+                {$CFG->prefix}lesson_attempts la
            WHERE l.id = la.lessonid
                  AND la.id = RECORDID
           </SQL_DETECT_COURSE>
diff --git a/mod/quiz/db/migrate2utf8.php b/mod/quiz/db/migrate2utf8.php
index 4f4901d2e19..d1f687ac29f 100755
--- a/mod/quiz/db/migrate2utf8.php
+++ b/mod/quiz/db/migrate2utf8.php
@@ -226,7 +226,7 @@ function migrate2utf8_quiz_match_sub_answertext($recordid){
     return $result;
 }
 
-function migrate2utf8_quiz_answer_answer($recordid){
+function migrate2utf8_quiz_answers_answer($recordid){
     global $CFG;
 
 /// Some trivial checks
@@ -272,6 +272,56 @@ function migrate2utf8_quiz_answer_answer($recordid){
     return $result;
 }
 
+function migrate2utf8_quiz_answers_feedback($recordid){
+    global $CFG;
+
+/// Some trivial checks
+    if (empty($recordid)) {
+        log_the_problem_somewhere();
+        return false;
+    }
+
+    $SQL = "SELECT qc.course
+           FROM {$CFG->prefix}quiz_categories qc,
+                {$CFG->prefix}quiz_questions qq,
+                {$CFG->prefix}quiz_answer qa
+           WHERE qc.id = qq.category
+                 AND qq.id = qa.question
+                 AND qa.id = $recordid";
+
+    if (!$quiz = get_record_sql($SQL)) {
+        log_the_problem_somewhere();
+        return false;
+    }
+
+    if (!$quizanswer= get_record('quiz_answer','id',$recordid)) {
+        log_the_problem_somewhere();
+        return false;
+    }
+
+    $sitelang   = $CFG->lang;
+    $courselang = get_course_lang($quiz->course);  //Non existing!
+    $userlang   = get_main_teacher_lang($quiz->course); //N.E.!!
+
+    $fromenc = get_original_encoding($sitelang, $courselang, $userlang);
+
+/// We are going to use textlib facilities
+    $textlib = textlib_get_instance();
+/// Convert the text
+    $result = $textlib->convert($quizanswer->feedback, $fromenc);
+
+    $newquizanswer = new object;
+    $newquizanswer->id = $recordid;
+    $newquizanswer->feedback = $result;
+    update_record('quiz_answer',$newquizanswer);
+/// And finally, just return the converted field
+    return $result;
+}
+
+
+
+
+
 function migrate2utf8_quiz_dataset_definitions_name($recordid){
     global $CFG;
 
diff --git a/mod/quiz/db/migrate2utf8.xml b/mod/quiz/db/migrate2utf8.xml
index 4a98d7caf06..3c3b6c25779 100755
--- a/mod/quiz/db/migrate2utf8.xml
+++ b/mod/quiz/db/migrate2utf8.xml
@@ -22,7 +22,7 @@
     </TABLE>
     <TABLE name="quiz_multianswers">
       <FIELDS>
-        <FIELD name="answers" method="NO_CONV" type="varchar" length="255" />
+        <FIELD name="sequence" method="NO_CONV" type="varchar" length="255" />
       </FIELDS>
     </TABLE>
     <TABLE name="quiz_match">
@@ -115,17 +115,17 @@
         </FIELD>
       </FIELDS>
     </TABLE>
-    <TABLE name="quiz_answer">
+    <TABLE name="quiz_answers">
       <FIELDS>
         <FIELD name="answer" method="PHP_FUNCTION" type="text" length="0">
           <PHP_FUNCTION>
-            migrate2utf8_quiz_answer_answer(RECORDID)
+            migrate2utf8_quiz_answers_answer(RECORDID)
           </PHP_FUNCTION>
         </FIELD>
         <FIELD name="fraction" method="NO_CONV" type="varchar" length="10" />
         <FIELD name="feedback" method="PHP_FUNCTION" type="text" length="0">
           <PHP_FUNCTION>
-            migrate2utf8_quiz_answer_feedback(RECORDID)
+            migrate2utf8_quiz_answers_feedback(RECORDID)
           </PHP_FUNCTION>
         </FIELD>
       </FIELDS>
@@ -165,7 +165,6 @@
                  AND qes.id = RECORDID
           </SQL_DETECT_COURSE>
         </FIELD>
-        <FIELD name="options" method="NO_CONV" type="varchar" length="255" />
       </FIELDS>
     </TABLE>
     <TABLE name="quiz_categories">
diff --git a/mod/scorm/db/migrate2utf8.xml b/mod/scorm/db/migrate2utf8.xml
index 44f5d16968e..c0eb90305e5 100755
--- a/mod/scorm/db/migrate2utf8.xml
+++ b/mod/scorm/db/migrate2utf8.xml
@@ -2,7 +2,7 @@
   <TABLES>
     <TABLE name="scorm_scoes_track">
       <FIELDS>
-        <FIELD name="element" method="PLAIN_SQL_UPDATE" type="varchar" length="255">
+        <FIELD name="element" method="PLAIN_SQL_UPDATE" type="varchar" length="255" dropindex="track" addindex="track (userid, scormid, scoid, attempt, element(255))">
           <SQL_DETECT_USER>
            SELECT sst.userid
            FROM {$CFG->prefix}scorm_scoes_track sst
@@ -30,7 +30,6 @@
                  AND sst.id = RECORDID
           </SQL_DETECT_COURSE>
         </FIELD>
-        <FIELD name="attachment" method="NO_CONV" type="varchar" length="100" />
       </FIELDS>
     </TABLE>
     <TABLE name="scorm_scoes">
diff --git a/mod/survey/db/migrate2utf8.xml b/mod/survey/db/migrate2utf8.xml
index 29293975b0c..255da724759 100755
--- a/mod/survey/db/migrate2utf8.xml
+++ b/mod/survey/db/migrate2utf8.xml
@@ -26,7 +26,7 @@
     </TABLE>
     <TABLE name="survey_answers">
       <FIELDS>
-        <FIELD name="answerone" method="PLAIN_SQL_UPDATE" type="text" length="0">
+        <FIELD name="answer1" method="PLAIN_SQL_UPDATE" type="text" length="0">
           <SQL_DETECT_USER>
            SELECT sa.userid
            FROM {$CFG->prefix}survey_answers sa
@@ -40,7 +40,7 @@
                  AND sa.id = RECORDID
           </SQL_DETECT_COURSE>
         </FIELD>
-        <FIELD name="answertwo" method="PLAIN_SQL_UPDATE" type="text" length="0">
+        <FIELD name="answer2" method="PLAIN_SQL_UPDATE" type="text" length="0">
           <SQL_DETECT_USER>
            SELECT sa.userid
            FROM {$CFG->prefix}survey_answers sa
diff --git a/mod/wiki/db/migrate2utf8.xml b/mod/wiki/db/migrate2utf8.xml
index ac962b84dc3..db752780866 100755
--- a/mod/wiki/db/migrate2utf8.xml
+++ b/mod/wiki/db/migrate2utf8.xml
@@ -2,7 +2,7 @@
   <TABLES>
     <TABLE name="wiki_entries">
       <FIELDS>
-        <FIELD name="pagename" method="PLAIN_SQL_UPDATE" type="varchar" length="255">
+        <FIELD name="pagename" method="PLAIN_SQL_UPDATE" type="varchar" length="255" dropindex="pagename" addindex="pagename(pagename(255))">
           <SQL_DETECT_USER>
            SELECT we.userid
            FROM {$CFG->prefix}wiki_entries we
@@ -20,7 +20,7 @@
     </TABLE>
     <TABLE name="wiki_pages">
       <FIELDS>
-        <FIELD name="pagename" method="PLAIN_SQL_UPDATE" type="varchar" length="160">
+        <FIELD name="pagename" method="PLAIN_SQL_UPDATE" type="varchar" length="160" dropindex="wiki_pages_uk" addindex="wiki_pages_uk(pagename(160), version, wiki)">
           <SQL_DETECT_USER>
            SELECT wp.userid
            FROM {$CFG->prefix}wiki_pages wp
@@ -62,7 +62,7 @@
                  AND we.id = RECORDID
           </SQL_DETECT_COURSE>
         </FIELD>
-        <FIELD name="ref" method="PLAIN_SQL_UPDATE" type="mediumtext" length="0">
+        <FIELD name="refs" method="PLAIN_SQL_UPDATE" type="mediumtext" length="0">
           <SQL_DETECT_USER>
            SELECT wp.userid
            FROM {$CFG->prefix}wiki_pages wp