diff --git a/python/build/pycharm.bat b/python/build/pycharm.bat
index 789a02eaecba..0a8a2c15380e 100644
--- a/python/build/pycharm.bat
+++ b/python/build/pycharm.bat
@@ -35,7 +35,7 @@ SET VM_OPTIONS_FILE=%IDE_BIN_DIR%\pycharm.exe.vmoptions
 SET ACC=
 FOR /F "usebackq delims=" %%i IN ("%VM_OPTIONS_FILE%") DO CALL "%IDE_BIN_DIR%\append.bat" "%%i"
 
-SET REQUIRED_JVM_ARGS="-Xbootclasspath/a:%IDE_HOME%/lib/boot.jar" -Didea.paths.selector=@@system_selector@@ %IDE_PROPERTIES_PROPERTY%
+SET REQUIRED_JVM_ARGS="-Xbootclasspath/a:%IDE_HOME%/lib/boot.jar" -Didea.no.jre.check=true -Didea.paths.selector=@@system_selector@@ %IDE_PROPERTIES_PROPERTY%
 SET SPECIAL_JVM_ARGS=-Didea.platform.prefix=Python
 SET JVM_ARGS=%ACC% %REQUIRED_JVM_ARGS% %SPECIAL_JVM_ARGS% %REQUIRED_PYCHARM_JVM_ARGS%
 
diff --git a/python/build/pycharm.sh b/python/build/pycharm.sh
index 275e72cf2fe3..2636fedec522 100644
--- a/python/build/pycharm.sh
+++ b/python/build/pycharm.sh
@@ -52,7 +52,7 @@ if [ -z "$JDK" ]; then
   fi
 fi
 
-VERSION_LOG='/tmp/java.version.log'
+VERSION_LOG=`mktemp -t java.version.log.XXXX`
 $JDK/bin/java -version 2> $VERSION_LOG
 grep 'OpenJDK' $VERSION_LOG
 OPEN_JDK=$?
diff --git a/python/src/META-INF/python-plugin-common.xml b/python/src/META-INF/python-plugin-common.xml
index 11d077074f83..28a1213b1eaa 100644
--- a/python/src/META-INF/python-plugin-common.xml
+++ b/python/src/META-INF/python-plugin-common.xml
@@ -308,6 +308,7 @@
     <completion.contributor language="Python"
                             implementationClass="com.jetbrains.python.codeInsight.completion.PyClassNameCompletionContributor"/>
     <weigher key="completion" implementationClass="com.jetbrains.python.codeInsight.completion.PythonCompletionWeigher" order="first"/>
+    <completion.confidence language="Python" implementationClass="com.jetbrains.python.codeInsight.completion.PyCompletionConfidence"/>
     <typedHandler implementation="com.jetbrains.python.console.completion.PythonConsoleAutopopupBlockingHandler" id="pydevBlockAutoPopup"
                   order="first, before completionAutoPopup"/>
 
diff --git a/python/src/com/jetbrains/python/codeInsight/completion/PyCompletionConfidence.java b/python/src/com/jetbrains/python/codeInsight/completion/PyCompletionConfidence.java
new file mode 100644
index 000000000000..eb8a249b3341
--- /dev/null
+++ b/python/src/com/jetbrains/python/codeInsight/completion/PyCompletionConfidence.java
@@ -0,0 +1,37 @@
+package com.jetbrains.python.codeInsight.completion;
+
+import com.intellij.codeInsight.completion.CompletionConfidence;
+import com.intellij.codeInsight.completion.CompletionParameters;
+import com.intellij.lang.ASTNode;
+import com.intellij.psi.PsiElement;
+import com.intellij.psi.PsiFile;
+import com.intellij.util.ThreeState;
+import com.jetbrains.python.PyTokenTypes;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * @author yole
+ */
+public class PyCompletionConfidence extends CompletionConfidence {
+  @NotNull
+  @Override
+  public ThreeState shouldFocusLookup(@NotNull CompletionParameters parameters) {
+    return ThreeState.UNSURE;
+  }
+
+  @NotNull
+  @Override
+  public ThreeState shouldSkipAutopopup(@Nullable PsiElement contextElement, @NotNull PsiFile psiFile, int offset) {
+    if (offset > 0) {
+      PsiElement element = psiFile.findElementAt(offset-1);
+      if (element != null) {
+        ASTNode node = element.getNode();
+        if (node != null && node.getElementType() == PyTokenTypes.FLOAT_LITERAL) {
+          return ThreeState.YES;
+        }
+      }
+    }
+    return super.shouldSkipAutopopup(contextElement, psiFile, offset);
+  }
+}
diff --git a/python/src/com/jetbrains/python/formatter/PyCodeStyleSettingsProvider.java b/python/src/com/jetbrains/python/formatter/PyCodeStyleSettingsProvider.java
index 46c80001125e..aa10645c932e 100644
--- a/python/src/com/jetbrains/python/formatter/PyCodeStyleSettingsProvider.java
+++ b/python/src/com/jetbrains/python/formatter/PyCodeStyleSettingsProvider.java
@@ -28,7 +28,7 @@ public class PyCodeStyleSettingsProvider extends CodeStyleSettingsProvider {
       }
 
       public String getHelpTopic() {
-        return null;
+        return "reference.settingsdialog.codestyle.python";
       }
     };
   }
diff --git a/python/src/com/jetbrains/python/refactoring/introduce/PyIntroduceDialog.java b/python/src/com/jetbrains/python/refactoring/introduce/PyIntroduceDialog.java
index d8c55a5f6a7f..778c1dcb8d3a 100644
--- a/python/src/com/jetbrains/python/refactoring/introduce/PyIntroduceDialog.java
+++ b/python/src/com/jetbrains/python/refactoring/introduce/PyIntroduceDialog.java
@@ -55,7 +55,6 @@ public class PyIntroduceDialog extends DialogWrapper {
     myHelpId = helpId;
     setUpNameComboBox(operation.getSuggestedNames());
 
-    setModal(true);
     setTitle(caption);
     init();
     setupDialog(operation.getAvailableInitPlaces());
@@ -104,12 +103,12 @@ public class PyIntroduceDialog extends DialogWrapper {
   private void setupDialog(EnumSet<IntroduceHandler.InitPlace> availableInitPlaces) {
     myReplaceAll.setMnemonic(KeyEvent.VK_A);
     myNameLabel.setLabelFor(myNameComboBox);
-    myPlaceSelector.setVisible(availableInitPlaces.size() > 0);
+    myPlaceSelector.setVisible(availableInitPlaces.size() > 1);
     myConstructor.setVisible(availableInitPlaces.contains(IntroduceHandler.InitPlace.CONSTRUCTOR));
     mySetUp.setVisible(availableInitPlaces.contains(IntroduceHandler.InitPlace.SET_UP));
     mySamePlace.setSelected(true);
     
-    // Replace occurences check box setup
+    // Replace occurrences check box setup
     if (myOccurrencesCount > 1) {
       myReplaceAll.setSelected(false);
       myReplaceAll.setEnabled(true);