diff --git a/src/model/Database.cpp b/src/model/Database.cpp
index f1a8eea..821a91b 100644
--- a/src/model/Database.cpp
+++ b/src/model/Database.cpp
@@ -642,7 +642,7 @@ void Database::DeleteOperations(User* user, int month, int year)
     EXECUTE_SQL_UPDATE(req, );
 
     it = user->_accounts.begin();
-    req = "DELETE FROM operation WHERE (account IN('" + it->id;
+    req = "DELETE FROM operation WHERE (account IN('" + QString::number(it->id);
     it++;
     for (;it != user->_accounts.end(); it++)
     {
@@ -653,7 +653,6 @@ void Database::DeleteOperations(User* user, int month, int year)
     req += " AND year='" + QString::number(year) + "'";
     if (month != -1)
         req += " AND month='" + QString::number(month) + "'";
-
     EXECUTE_SQL_UPDATE(req, );
 }
 
diff --git a/src/model/Database.hpp b/src/model/Database.hpp
index 531be06..91d76d2 100644
--- a/src/model/Database.hpp
+++ b/src/model/Database.hpp
@@ -46,7 +46,7 @@
 	if (!query.exec(req))						\
 	{								\
 	    QMessageBox::critical(0, _("Error"), _("Update failed !\n") + req); \
-	    std::cerr << __FUNCTION__ << "\n" ;				\
+	    std::cerr << __FUNCTION__ << " " << __FILE__ << " " << __LINE__ << "\n" ; \
 	    std::cerr << req.toStdString() << "\n" ;			\
 	    std::cerr << query.lastError().text().toStdString() << "\n" ; \
 	    code_if_fail;						\
diff --git a/src/view/AccountPanel.cpp b/src/view/AccountPanel.cpp
index f2e9f34..1eaf1d3 100644
--- a/src/view/AccountPanel.cpp
+++ b/src/view/AccountPanel.cpp
@@ -86,9 +86,9 @@ AccountPanel::AccountPanel(KissCount* kiss, wxUI *parent) : KissPanel(kiss, pare
     
     nbCategories = (user->GetCategoriesNumber() <= wxUI::MAX_CATEGORY) ? user->GetCategoriesNumber() : wxUI::MAX_CATEGORY;
 
-    _dataset = new QStandardItemModel(user->GetCategoriesNumber(), 2, this);
-    _categoriesValues = new double[user->GetCategoriesNumber()];
-    for(i=0; i<user->GetCategoriesNumber(); i++)
+    _dataset = new QStandardItemModel(nbCategories, 2, this);
+    _categoriesValues = new double[nbCategories];
+    for(i=0; i<nbCategories; i++)
     {
     	_categoriesValues[i] = 0.0;
 	_dataset->setData(_dataset->index(i, 0, QModelIndex()), _categories[i]);
@@ -916,58 +916,72 @@ void AccountPanel::OnMenuGenerate()
 
 void AccountPanel::OnMenuDelete()
 {
-    // int month, year;
-    // wxString message;
-    // wxTreeItemId curNode, node ;
-    // std::map<int, std::vector<int> > ops ;
+    int month, year, i;
+    QString message;
+    QTreeWidgetItem* curNode, *node ;
+    std::map<int, std::vector<int> > ops ;
+    
+    GetTreeSelection(&month, &year);
 
-    // GetTreeSelection(&month, &year);
+    ops = _kiss->GetAllOperations();
 
-    // ops = _kiss->GetAllOperations();
+    if (ops.size() == 1 && (ops[year].size() == 1 || month == -1))
+    {
+        QMessageBox::critical(0, _("Error"), _("It must be at least one month !"));
+        return;
+    }
 
-    // if (ops.size() == 1 && (ops[year].size() == 1 || month == -1))
-    // {
-    //     wxMessageBox(_("It must be at least one month !"), _("Error"), wxICON_ERROR | wxOK);
-    //     return;
-    // }
+    message = _("Are you sure want to delete ");
+    if (month != -1)
+        message += wxUI::months[month] + " ";
+    message += QString::number(year);
 
-    // message = _("Are you sure want to delete ");
-    // if (month != -1)
-    //     message += wxUI::months[month] + wxT(" ");
-    // message += wxString::Format(wxT("%d"), year);
+    message += _(" operations ?");
 
-    // message += _(" operations ?");
+    if (QMessageBox::question(0, "KissCount", message, QMessageBox::Yes|QMessageBox::No) == QMessageBox::No)
+        return;
 
-    // wxMessageDialog dialog(_wxUI, message, wxT("KissCount"), wxYES_NO);
-    // if (dialog.ShowModal() == wxID_NO)
-    //     return;
+    curNode = _tree->currentItem();
 
-    // curNode = _tree.GetSelection();
+    if (ops[year].size() == 1 && month != -1)
+        curNode = curNode->parent();
 
-    // if (ops[year].size() == 1 && month != -1)
-    //     curNode = _tree.GetItemParent(curNode);
+    _kiss->DeleteOperations(month, year);
 
-    // _kiss->DeleteOperations(month, year);
+    i = _tree->indexOfTopLevelItem(curNode);
+    if (i == -1)
+    {
+	node = _tree->itemBelow(curNode);
 
-    // node = _tree.GetNextSibling(curNode);
+	if (!node)
+	    node = _tree->itemAbove(curNode);
 
-    // if (!node.IsOk())
-    //     node = _tree.GetPrevSibling(curNode);
-
-    // _tree.Delete(curNode);
-
-    // if (!node.IsOk())
-    //     ChangeUser();
-    // else
-    // {
-    //     _tree.SelectItem(node);
-    //     GetTreeSelection(&month, &year);
-    //     if (month == -1)
-    //         month = ops[year][0];
-    //     ShowMonth(month, year);
-    // }
-    // _wxUI->NeedReload();
+	curNode->parent()->removeChild(curNode);
+        _tree->setCurrentItem(node);
+    }
+    else
+    {
+	delete _tree->takeTopLevelItem(i);
+	if (i) i--;
+        _tree->setCurrentItem(_tree->topLevelItem(i));
+	curNode = _tree->topLevelItem(i);
+	if (!curNode->childCount())
+	    LoadYear(curNode->text(0).toInt());
+	_tree->setCurrentItem(curNode->child(curNode->childCount()-1));
+    }
+    
+    if (!node)
+        ChangeUser();
+    else
+    {
+        GetTreeSelection(&month, &year);
+        if (month == -1)
+            month = ops[year][0];
+        ShowMonth(month, year);
+	_wxUI->NeedReload();
+    }
 }
+
 void AccountPanel::GenerateMonth(int month, int year)
 {
     QString s;
diff --git a/src/view/GenerateDialog.cpp b/src/view/GenerateDialog.cpp
index 639bf9d..25aecce 100644
--- a/src/view/GenerateDialog.cpp
+++ b/src/view/GenerateDialog.cpp
@@ -26,7 +26,6 @@ GenerateDialog::GenerateDialog(KissCount* kiss, wxUI *parent, int month, int yea
     int i, a, toSelect=-1;
     QDate curDate = QDate::currentDate();
     std::vector<int>::iterator monthIt;
-    QString s;
 
     // wxBoxSizer *hbox = new wxBoxSizer(wxHORIZONTAL);
     gridLayout = new QGridLayout(this);
@@ -64,7 +63,7 @@ GenerateDialog::GenerateDialog(KissCount* kiss, wxUI *parent, int month, int yea
 
     for(i=1, it = _ops.begin(); it != _ops.end(); it++, i++)
     {
-        _yearFrom->addItem(s.sprintf("%d", it->first));
+        _yearFrom->addItem(QString::number(it->first));
         if (year == it->first)
             toSelect = i;
     }
@@ -91,12 +90,12 @@ GenerateDialog::GenerateDialog(KissCount* kiss, wxUI *parent, int month, int yea
         _yearFrom->setCurrentIndex(0);
     }
 
-    for(i=2000; i<=2050; i++)
-        _yearTo->addItem(s.sprintf("%d", i));
+    for(i=curDate.year()-10; i<=curDate.year()+10; i++)
+        _yearTo->addItem(QString::number(i));
 
     if (year == -1)
     {
-        _yearTo->setCurrentIndex(curDate.year()-2000);
+        _yearTo->setCurrentIndex(9);
         _monthTo->setCurrentIndex(curDate.month());
     }
     else
@@ -104,7 +103,7 @@ GenerateDialog::GenerateDialog(KissCount* kiss, wxUI *parent, int month, int yea
         if (month == 11)
 	    year++;
 
-	_yearTo->setCurrentIndex(year-2000);
+	_yearTo->setCurrentIndex(year-(curDate.year()-10));
 
         if (month == -1)
             _monthTo->setCurrentIndex(0);
diff --git a/src/view/grid/DateDelegate.cpp b/src/view/grid/DateDelegate.cpp
index 4c8d0aa..aa6222d 100644
--- a/src/view/grid/DateDelegate.cpp
+++ b/src/view/grid/DateDelegate.cpp
@@ -21,16 +21,13 @@
 
 #include "DateDelegate.hpp"
 
-#include <iostream>
-
 QWidget * DateDelegate::createEditor (QWidget * parent, const QStyleOptionViewItem & option, const QModelIndex & index ) const
 {
     QComboBox* combo = new QComboBox(parent);
     QDate date(_year, _month, _day);
-    QString s;
 
     for(int i=0; i<date.daysInMonth(); i++)
-    	combo->addItem(s.sprintf("%d", i+1));
+    	combo->addItem(QString::number(i+1));
 
     return combo;
 }