diff --git a/TODO b/TODO
index d0f529ead9b77c1a62ad56b51428df5848349db1..d91a31364cac79dc81708f1a5f8290bff73d3324 100644
--- a/TODO
+++ b/TODO
@@ -22,10 +22,7 @@ MINOR:
       if it is started from creator - there is highlight of message 
       but when started from 'start' menu - there is not
 - replace all font-szie: 20px with <big>
-- lock right button and space bar during correction
-- try to avoid many resizeEvent-s of TmultiScore during window size change
 - when exercise is finished and analysis dialog was opened message text remains
-- add minimal zoom value depends on screen resolution
 - stop sniffer when melody dialogues are opening
 - changing tool bar auto-hiding causes sometimes locked melody menu
 - auto hidden tool bar remains big after decreased window size
@@ -40,6 +37,8 @@ TRANSLATIONS
 
 
 ==== SMALL NEW FEATURES/IMPROVEMENTS =============================================================
+- try to avoid many resizeEvent-s of TmultiScore during window size change
+- add minimal zoom value depends on screen resolution
 - average effectiveness line in chart
 - make exam summary pretty
 - certificates would have some additional data about melodies
diff --git a/src/libs/sound/trtaudioin.cpp b/src/libs/sound/trtaudioin.cpp
index e1164fef238c209a3f7fb88a0b2244465172b97e..18ffc16aee57ea8e5fa22b57375801488c7315ba 100755
--- a/src/libs/sound/trtaudioin.cpp
+++ b/src/libs/sound/trtaudioin.cpp
@@ -21,7 +21,7 @@
 #if defined(Q_OS_WIN)
   #include "tasioemitter.h"
 #endif
-#include <QDebug>
+
 
 
 /*static */
diff --git a/src/libs/sound/trtaudioin.h b/src/libs/sound/trtaudioin.h
index 93b7689e0d6cd317fcd32754a41c281046efd026..87d5c00ff031e704b5c66e5537a549f8713ded11 100755
--- a/src/libs/sound/trtaudioin.h
+++ b/src/libs/sound/trtaudioin.h
@@ -22,6 +22,7 @@
 #include "nootkacoreglobal.h"
 #include <QObject>
 #include <QStringList>
+#include <QDebug>
 #include <music/tnote.h>
 #include <music/tnotestruct.h>
 #include "rt/RtAudio.h"
@@ -128,9 +129,11 @@ public slots:
 	void stopListening();
   
 protected:
-	static bool inCallBack(void* inBuff, unsigned int nBufferFrames, const RtAudioStreamStatus&) {
+	static bool inCallBack(void* inBuff, unsigned int nBufferFrames, const RtAudioStreamStatus& st) {
     if (m_goingDelete || instance()->isStoped())
       return true;
+    if (st)
+      qDebug() << "input buffer underflow";
     qint16 *in = (qint16*)inBuff;
     qint16 value;
     for (int i = 0; i < nBufferFrames; i++) {
diff --git a/src/libs/sound/tsound.cpp b/src/libs/sound/tsound.cpp
index 1c45b73f2922b6db96a9a6faa587054512710365..93dc5dfe5b259aaac7e82389b938d52eda078bee 100755
--- a/src/libs/sound/tsound.cpp
+++ b/src/libs/sound/tsound.cpp
@@ -148,7 +148,7 @@ void Tsound::setPitchView(TpitchView* pView) {
 	m_pitchView->setIntonationAccuracy(Tcore::gl()->A->intonation);
 	m_pitchView->setAudioInput(sniffer);
   if (sniffer)
-    QTimer::singleShot(1500, sniffer, SLOT(startListening()));
+    QTimer::singleShot(750, sniffer, SLOT(startListening()));
 // 		sniffer->startListening();
 }
 
diff --git a/src/libs/sound/widgets/tpitchview.cpp b/src/libs/sound/widgets/tpitchview.cpp
index ce8c6681774d26859f05c571e235786b7c9f8182..0bb5c5703b2f90cd2e0bc50f062f4462bbbe40c6 100644
--- a/src/libs/sound/widgets/tpitchview.cpp
+++ b/src/libs/sound/widgets/tpitchview.cpp
@@ -81,7 +81,9 @@ void TpitchView::watchInput() {
     m_prevPitch = -1.0;
     m_watchTimer->start(75);
     connect(m_audioIN, &TaudioIN::noteStarted, this, &TpitchView::noteSlot);
-    if (m_intoView->accuracyChangeEnabled())
+    if (m_intoView->accuracy() == TintonationView::e_noCheck && !m_intoView->accuracyChangeEnabled())
+      m_intoView->setDisabled(true);
+    else
       m_intoView->setDisabled(false);
   }
 }
@@ -96,8 +98,7 @@ void TpitchView::stopWatching() {
     if (m_intoView->isEnabled())
       m_intoView->pitchSlot(0.0);
   }
-  if (m_intoView->accuracyChangeEnabled())
-    m_intoView->setDisabled(true);
+  m_intoView->setDisabled(true);
 }
 
 
diff --git a/src/main.cpp b/src/main.cpp
index fcd0198e4ec743b829f841b5fc1428bd6645fb92..b70e6c6ce7a492c50f3165060d2c0c5e62387d82 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -76,6 +76,6 @@ int main(int argc, char *argv[])
 		delete w;
     delete gl;
 	} while (resetConfig);
-		
+
 	return exitCode;
 }
diff --git a/src/plugins/settings/audioinsettings.cpp b/src/plugins/settings/audioinsettings.cpp
index 80d63c40788a00d4c422ab1411f1831b5383baf5..cbb2197f4e7dbcfa711ff1fe1b70bdb181a6ab41 100755
--- a/src/plugins/settings/audioinsettings.cpp
+++ b/src/plugins/settings/audioinsettings.cpp
@@ -452,31 +452,31 @@ float AudioInSettings::offPitch(float pitch) {
 
 
 void AudioInSettings::getFreqStatusTip() {
-		QString freqTxt = "";
-		if (m_tune->stringNr() > 2) { // guitar
-			for (int i = 1; i <= m_tune->stringNr(); i++) {
-				freqTxt += QString("<span style=\"font-family: nootka;\">%1</span>%2 = %3 Hz, ").arg(i).
-				arg((m_tune->str(i)).toRichText()).
-				arg(offPitch((float)m_tune->str(i).chromatic() + 47), 0, 'f', 1);
-				if (i % 2 == 0 && i < 6)
-						freqTxt += "<br>"; // two entries per line 
-				else if (i % 3 == 0 && i < 6)
-						freqTxt += "ALT_BR"; // three entries per line
-			}
-		} else { // no guitar - C-major scale frequencies
-			for (int i = 1; i < 8; i++) {
-				freqTxt += QString("<b>%1</b> = %2 Hz, ").arg(Tnote(i, 1, 0).toRichText()).
-						arg(offPitch((float)Tnote(i, 1, 0).chromatic() + 47), 0, 'f', 1);
-				if (i % 2 == 0 && i < 7)
-						freqTxt += "<br>"; // three entries per line 
-				else if (i % 3 == 0 && i < 7)
-						freqTxt += "ALT_BR"; // four entries per line
-			}
-		}
-    QString freq2 = freqTxt;
-    freqLab->setStatusTip(tr("Frequency of detected note. You can use this for tuning.") + "<br>" +
-          freq2.replace("<br>", "").replace("ALT_BR", "<br>")); // three entries per line in status tip
-    tuneFreqlab->setText(freqTxt.replace("ALT_BR", "")); // two entries per line on the label
+  QString freqTxt = "";
+  if (m_tune->stringNr() > 2) { // guitar
+    for (int i = 1; i <= m_tune->stringNr(); i++) {
+      freqTxt += QString("<span style=\"font-family: nootka;\">%1</span>%2 = %3 Hz, ").arg(i).
+      arg((m_tune->str(i)).toRichText()).
+      arg(offPitch((float)m_tune->str(i).chromatic() + 47), 0, 'f', 1);
+      if (i % 2 == 0 && i < 6)
+          freqTxt += "<br>"; // two entries per line
+      else if (i % 3 == 0 && i < 6)
+          freqTxt += "ALT_BR"; // three entries per line
+    }
+  } else { // no guitar - C-major scale frequencies
+    for (int i = 1; i < 8; i++) {
+      freqTxt += QString("<b>%1</b> = %2 Hz, ").arg(Tnote(i, 1, 0).toRichText()).
+          arg(offPitch((float)Tnote(i, 1, 0).chromatic() + 47), 0, 'f', 1);
+      if (i % 2 == 0 && i < 7)
+          freqTxt += "<br>"; // three entries per line
+      else if (i % 3 == 0 && i < 7)
+          freqTxt += "ALT_BR"; // four entries per line
+    }
+  }
+  QString freq2 = freqTxt;
+  freqLab->setStatusTip(tr("Frequency of detected note. You can use this for tuning.") + "<br>" +
+        freq2.replace("<br>", "").replace("ALT_BR", "<br>")); // three entries per line in status tip
+  tuneFreqlab->setText(freqTxt.replace("ALT_BR", "")); // two entries per line on the label
 }
 
 
@@ -577,6 +577,7 @@ void AudioInSettings::testSlot() {
       if (m_audioIn) {
         pitchView->stopWatching();
         m_audioIn->stopListening();
+        m_intonationCombo->setCurrentIndex(m_audioIn->intonationAccuracy());
       }
       testButt->setText(testTxt);
       testButt->setIcon(QIcon(style()->standardIcon(QStyle::SP_MediaPlay)));
diff --git a/src/plugins/settings/tsettingsdialog.cpp b/src/plugins/settings/tsettingsdialog.cpp
index e12d0fcc2a6d5cc3a90e9113a1c52865d3e7eaa7..c84f9b6b081b394c06021a0f187c7de9808937af 100755
--- a/src/plugins/settings/tsettingsdialog.cpp
+++ b/src/plugins/settings/tsettingsdialog.cpp
@@ -100,6 +100,12 @@ TsettingsDialog::TsettingsDialog(QWidget *parent, EsettingsMode mode) :
 		connect(defaultBut, SIGNAL(pressed()), this, SLOT(restoreDefaults()));
     connect(m_helpButt, SIGNAL(pressed()), this, SLOT(helpSlot()));
 
+//     int maxW = 0;
+//     for (int i = 0; i < navList->count(); ++i) {
+//       maxW = qMax<int>(navList->visualItemRect(navList->item(i)).width(), maxW);
+//     }
+//     navList->setFixedWidth(maxW);
+
 	if (mode == e_settings) {
     navList->setCurrentRow(0);
 		changeSettingsWidget(1); // score settings must to exist