--- SXSSFSheet.java	(revision 1186746)
+++ SXSSFSheet.java	(working copy)
@@ -35,6 +35,7 @@ 
  * Streaming version of XSSFSheet implementing the "BigGridDemo" strategy.
  *
  * @author Alex Geller, Four J's Development Tools
+ * @author Stefan Helfert
 */
 public class SXSSFSheet implements Sheet, Cloneable
 {
@@ -1284,7 +1285,7 @@ 
 
         public SheetDataWriter() throws IOException 
         {
-            _fd = File.createTempFile("poi-sxxsf-sheet", ".xml");
+            _fd = File.createTempFile("poi-sxssf-sheet", ".xml");
             _fd.deleteOnExit();
             _out = new BufferedWriter(new FileWriter(_fd));
         }
--- SXSSFWorkbook.java	(revision 1186746)
+++ SXSSFWorkbook.java	(working copy)
@@ -47,6 +47,7 @@ 
  * Streaming version of XSSFWorkbook implementing the "BigGridDemo" strategy.
  *
  * @author Alex Geller, Four J's Development Tools
+ * @author Stefan Helfert
 */
 public class SXSSFWorkbook implements Workbook
 {
@@ -208,7 +209,7 @@ 
             }
             is.close();
         }
-
+        zip.close(); //otherwise xlsx temp file cant be deleted
         zos.close();
     }
     private static void copyStream(InputStream in, OutputStream out) throws IOException {
@@ -316,6 +317,7 @@ 
         while(((c=inReader.read())!=-1))
             outWriter.write(c);
         outWriter.flush();
+        worksheetData.close();//Otherwise xml-temp file cant be deleted
     }
 
     public XSSFWorkbook getXSSFWorkbook()
@@ -649,7 +651,7 @@ 
     	}
     	
         //Save the template
-        File tmplFile = File.createTempFile("poi-sxxsf-template", ".xlsx");
+        File tmplFile = File.createTempFile("poi-sxssf-template", ".xlsx");
         tmplFile.deleteOnExit();
         FileOutputStream os = new FileOutputStream(tmplFile);
         _wb.write(os);