diff --git a/sleepyhead/Graphs/gFlagsLine.cpp b/sleepyhead/Graphs/gFlagsLine.cpp
index 07be5ef4..6463f894 100644
--- a/sleepyhead/Graphs/gFlagsLine.cpp
+++ b/sleepyhead/Graphs/gFlagsLine.cpp
@@ -240,8 +240,6 @@ bool gFlagsGroup::mouseMoveEvent(QMouseEvent *event, gGraph *graph)
 
         }
     }
-
-    return false;
 }
 
 
@@ -424,5 +422,5 @@ bool gFlagsLine::mouseMoveEvent(QMouseEvent *event, gGraph *graph)
     Q_UNUSED(graph)
     //  qDebug() << code() << event->x() << event->y() << graph->rect();
 
-    return false;
+    return true;
 }
diff --git a/sleepyhead/SleepLib/machine.cpp b/sleepyhead/SleepLib/machine.cpp
index 2910f86a..7601f2b3 100644
--- a/sleepyhead/SleepLib/machine.cpp
+++ b/sleepyhead/SleepLib/machine.cpp
@@ -23,6 +23,7 @@
 #include "profiles.h"
 #include <algorithm>
 #include "SleepLib/schema.h"
+#include "SleepLib/day.h"
 
 extern QProgressBar *qprogress;
 
@@ -389,7 +390,6 @@ const QString Machine::getBackupPath()
     return p_profile->Get("{" + STR_GEN_DataFolder + "}/" + info.loadername + "_" + (info.serial.isEmpty() ? hexid() : info.serial)  + "/Backup/");
 }
 
-
 bool Machine::Load()
 {
     QString path = getDataPath();
@@ -670,6 +670,27 @@ bool Machine::Save()
     return true;
 }
 
+QList<ChannelID> Machine::availableChannels(schema::ChanType chantype)
+{
+    QHash<ChannelID, int> chanhash;
+
+    // look through the daylist and return a list of available channels for this machine
+    QMap<QDate, Day *>::iterator dit;
+    QMap<QDate, Day *>::iterator day_end = day.end();
+    for (dit = day.begin(); dit != day_end; ++dit) {
+        QList<Session *>::iterator sess_end = dit.value()->end();
+        for (QList<Session *>::iterator sit = dit.value()->begin(); sit != sess_end; ++sit) {
+            // sessions desperately need to cache this..
+            ///sit.value
+        }
+    }
+    QList<ChannelID> channels;
+
+    return channels;
+}
+
+
+
 //////////////////////////////////////////////////////////////////////////////////////////
 // CPAP implmementation
 //////////////////////////////////////////////////////////////////////////////////////////
diff --git a/sleepyhead/SleepLib/machine.h b/sleepyhead/SleepLib/machine.h
index 4203ad01..f1bf2433 100644
--- a/sleepyhead/SleepLib/machine.h
+++ b/sleepyhead/SleepLib/machine.h
@@ -29,7 +29,7 @@
 #include "SleepLib/machine_common.h"
 #include "SleepLib/event.h"
 #include "SleepLib/session.h"
-
+#include "SleepLib/schema.h"
 #include "SleepLib/day.h"
 
 
@@ -194,6 +194,8 @@ class Machine
 
     void setLoaderName(QString value);
 
+    QList<ChannelID> availableChannels(schema::ChanType chantype);
+
     MachineLoader * loader() { return m_loader; }
 
     // much more simpler multithreading...
diff --git a/sleepyhead/SleepLib/schema.h b/sleepyhead/SleepLib/schema.h
index ae9af97f..5c87a069 100644
--- a/sleepyhead/SleepLib/schema.h
+++ b/sleepyhead/SleepLib/schema.h
@@ -35,7 +35,14 @@ enum Function {
 };
 
 enum ChanType {
-    DATA = 0, SETTING, FLAG, MINOR_FLAG, SPAN, WAVEFORM
+    DATA = 1,
+    SETTING = 2,
+    FLAG = 4,
+    MINOR_FLAG = 8,
+    SPAN = 16,
+    WAVEFORM = 32,
+
+    ALL = 0xFFFF
 };
 
 enum DataType {
diff --git a/sleepyhead/SleepLib/session.cpp b/sleepyhead/SleepLib/session.cpp
index 3af433a8..c334de91 100644
--- a/sleepyhead/SleepLib/session.cpp
+++ b/sleepyhead/SleepLib/session.cpp
@@ -29,7 +29,7 @@ const quint16 filetype_data = 1;
 
 // This is the uber important database version for SleepyHeads internal storage
 // Increment this after stuffing with Session's save & load code.
-const quint16 summary_version = 14;
+const quint16 summary_version = 15;
 const quint16 events_version = 10;
 
 Session::Session(Machine *m, SessionID session)
@@ -199,11 +199,26 @@ bool Session::StoreSummary(QString filename)
     out << m_firstchan;
     out << m_lastchan;
 
+    // <- 8
     out << m_valuesummary;
     out << m_timesummary;
-    out << m_gain;
+    // 8 ->
 
+    // <- 9
+    out << m_gain;
+    // 9 ->
+
+    // <- 15
+    out << m_availableChannels;
+    out << m_timeAboveTheshold;
+    out << m_upperThreshold;
+    out << m_timeBelowTheshold;
+    out << m_lowerThreshold;
+    // 15 ->
+
+    // <- 13
     out << s_summaryOnly;
+    // 13 ->
 
     file.close();
     return true;
@@ -422,6 +437,15 @@ bool Session::LoadSummary(QString filename)
             }
         }
 
+        // screwed up with version 14
+        if (version >= 15) {
+            in >> m_availableChannels;
+            in >> m_timeAboveTheshold;
+            in >> m_upperThreshold;
+            in >> m_timeBelowTheshold;
+            in >> m_lowerThreshold;
+        } // else this is ugly.. forced machine database upgrade will solve it though.
+
         if (version == 13) {
             QHash<ChannelID, QVariant>::iterator it = settings.find(CPAP_SummaryOnly);
             if (it != settings.end()) {
@@ -900,6 +924,7 @@ void Session::updateCountSummary(ChannelID code)
 
 void Session::UpdateSummaries()
 {
+
     ChannelID id;
     calcAHIGraph(this);
 
@@ -915,8 +940,11 @@ void Session::UpdateSummaries()
     QHash<ChannelID, QVector<EventList *> >::iterator c = eventlist.begin();
     QHash<ChannelID, QVector<EventList *> >::iterator ev_end = eventlist.end();
 
+    m_availableChannels.clear();
+
     for (; c != ev_end; c++) {
         id = c.key();
+        m_availableChannels.push_back(id);
 
         schema::ChanType ctype = schema::channel[id].type();
         if (ctype != schema::SETTING) {
@@ -951,6 +979,7 @@ void Session::UpdateSummaries()
             wavg(id);
         }
     }
+    timeAboveThreshold(CPAP_Leak, p_profile->cpap->leakRedline());
 }
 
 EventDataType Session::SearchValue(ChannelID code, qint64 time, bool square)
@@ -1789,6 +1818,17 @@ EventDataType Session::sph(ChannelID id) // sum per hour, assuming id is a time
 
 EventDataType Session::timeAboveThreshold(ChannelID id, EventDataType threshold)
 {
+    QHash<ChannelID, EventDataType>::iterator th = m_upperThreshold.find(id);
+    if (th != m_upperThreshold.end()) {
+        if (fabs(th.value()-threshold) < 0.00000001) { // close enough
+            th = m_timeAboveTheshold.find(id);
+            if (th != m_timeAboveTheshold.end()) {
+                return th.value();
+            }
+        }
+    }
+    bool loaded = s_events_loaded;
+
     this->OpenEvents();
     QHash<ChannelID, QVector<EventList *> >::iterator j = eventlist.find(id);
     if (j == eventlist.end()) {
@@ -1825,11 +1865,26 @@ EventDataType Session::timeAboveThreshold(ChannelID id, EventDataType threshold)
         total += ti-started;
     }
     EventDataType time = double(total) / 60000.0;
+
+    m_timeAboveTheshold[id] = time;
+    m_upperThreshold[id] = threshold;
+    if (!loaded) this->TrashEvents(); // otherwise leave it open
     return time;
 }
 
 EventDataType Session::timeBelowThreshold(ChannelID id, EventDataType threshold)
 {
+    QHash<ChannelID, EventDataType>::iterator th = m_lowerThreshold.find(id);
+    if (th != m_lowerThreshold.end()) {
+        if (fabs(th.value()-threshold) < 0.00000001) { // close enough
+            th = m_timeBelowTheshold.find(id);
+            if (th != m_timeBelowTheshold.end()) {
+                return th.value();
+            }
+        }
+    }
+    bool loaded = s_events_loaded;
+
     QHash<ChannelID, QVector<EventList *> >::iterator j = eventlist.find(id);
     if (j == eventlist.end()) {
         return 0.0f;
@@ -1867,6 +1922,11 @@ EventDataType Session::timeBelowThreshold(ChannelID id, EventDataType threshold)
     }
 
     EventDataType time = double(total) / 60000.0;
+
+    m_timeBelowTheshold[id] = time;
+    m_lowerThreshold[id] = threshold;
+    if (!loaded) this->TrashEvents(); // otherwise leave it open
+
     return time;
 }
 
diff --git a/sleepyhead/SleepLib/session.h b/sleepyhead/SleepLib/session.h
index e1a830d8..8c2b05f7 100644
--- a/sleepyhead/SleepLib/session.h
+++ b/sleepyhead/SleepLib/session.h
@@ -168,6 +168,15 @@ class Session
     QHash<ChannelID, QHash<EventStoreType, quint32> > m_timesummary;
     QHash<ChannelID, EventDataType> m_gain;
 
+    QHash<ChannelID, EventDataType> m_lowerThreshold;
+    QHash<ChannelID, EventDataType> m_timeBelowTheshold;
+    QHash<ChannelID, EventDataType> m_upperThreshold;
+    QHash<ChannelID, EventDataType> m_timeAboveTheshold;
+
+    QList<ChannelID> m_availableChannels;
+
+    const QList<ChannelID> & availableChannels() { return m_availableChannels; }
+
     //! \brief Generates sum and time data for each distinct value in 'code' events..
     void updateCountSummary(ChannelID code);
 
diff --git a/sleepyhead/mainwindow.cpp b/sleepyhead/mainwindow.cpp
index 6ac50094..ab96bfb7 100644
--- a/sleepyhead/mainwindow.cpp
+++ b/sleepyhead/mainwindow.cpp
@@ -877,10 +877,11 @@ void MainWindow::on_action_Import_Data_triggered()
     time.start();
     QDialog popup(this, Qt::FramelessWindowHint);
     popup.setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Minimum);
-    QLabel waitmsg(tr("Please wait, scanning for CPAP data cards..."));
-    QVBoxLayout waitlayout(&popup);
-    waitlayout.addWidget(&waitmsg,1,Qt::AlignCenter);
-    waitlayout.addWidget(qprogress,1);
+    QLabel * waitmsg = new QLabel(tr("Please wait, scanning for CPAP data cards..."));
+    QVBoxLayout *waitlayout = new QVBoxLayout();
+    waitlayout->addWidget(waitmsg,1,Qt::AlignCenter);
+    waitlayout->addWidget(qprogress,1);
+    popup.setLayout(waitlayout);
 
     bool asknew = false;
     qprogress->setVisible(false);
@@ -912,13 +913,13 @@ void MainWindow::on_action_Import_Data_triggered()
             ui->statusbar->insertWidget(2,qprogress,1);
             return;
         } else if (res == QMessageBox::No) {
-            waitmsg.setText(tr("Please wait, launching file dialog..."));
+            waitmsg->setText(tr("Please wait, launching file dialog..."));
             datacards.clear();
             asknew = true;
         }
 
     } else {
-        waitmsg.setText(tr("No CPAP data card detected, launching file dialog..."));
+        waitmsg->setText(tr("No CPAP data card detected, launching file dialog..."));
         asknew = true;
     }