diff --git a/src/main/java/com/metaweb/gridworks/commands/util/CancelProcessesCommand.java b/src/main/java/com/metaweb/gridworks/commands/util/CancelProcessesCommand.java
index 1f0417211..203ff7903 100644
--- a/src/main/java/com/metaweb/gridworks/commands/util/CancelProcessesCommand.java
+++ b/src/main/java/com/metaweb/gridworks/commands/util/CancelProcessesCommand.java
@@ -12,7 +12,7 @@ import com.metaweb.gridworks.model.Project;
 public class CancelProcessesCommand extends Command {
     
     @Override
-    public void doGet(HttpServletRequest request, HttpServletResponse response)
+    public void doPost(HttpServletRequest request, HttpServletResponse response)
             throws ServletException, IOException {
         
         try {
diff --git a/src/main/java/com/metaweb/gridworks/operations/ReconOperation.java b/src/main/java/com/metaweb/gridworks/operations/ReconOperation.java
index 15717266a..4b10588c0 100644
--- a/src/main/java/com/metaweb/gridworks/operations/ReconOperation.java
+++ b/src/main/java/com/metaweb/gridworks/operations/ReconOperation.java
@@ -214,22 +214,24 @@ public class ReconOperation extends EngineDependentOperation {
                 }
             }
             
-            Change reconChange = new ReconChange(
-                cellChanges, 
-                _columnName, 
-                _reconConfig,
-                null
-            );
-            
-            HistoryEntry historyEntry = new HistoryEntry(
-                _project, 
-                _description, 
-                ReconOperation.this, 
-                reconChange
-            );
-            
-            _project.history.addEntry(historyEntry);
-            _project.processManager.onDoneProcess(this);
+            if (!_canceled) {
+                Change reconChange = new ReconChange(
+                    cellChanges, 
+                    _columnName, 
+                    _reconConfig,
+                    null
+                );
+                
+                HistoryEntry historyEntry = new HistoryEntry(
+                    _project, 
+                    _description, 
+                    ReconOperation.this, 
+                    reconChange
+                );
+                
+                _project.history.addEntry(historyEntry);
+                _project.processManager.onDoneProcess(this);
+            }
         }
     }
 }
diff --git a/src/main/webapp/scripts/project/process-widget.js b/src/main/webapp/scripts/project/process-widget.js
index e48d34bfb..84ec574c8 100644
--- a/src/main/webapp/scripts/project/process-widget.js
+++ b/src/main/webapp/scripts/project/process-widget.js
@@ -33,6 +33,15 @@ ProcessWidget.prototype.update = function(updateOptions, onDone) {
     );
 };
 
+ProcessWidget.prototype._cancelAll = function() {
+    $.post(
+        "/command/cancel-processes?" + $.param({ project: theProject.id }), 
+        null,
+        function(o) {},
+        "json"
+    );
+};
+
 ProcessWidget.prototype._render = function() {
     var self = this;
     
@@ -43,14 +52,23 @@ ProcessWidget.prototype._render = function() {
     } else {
         this._div.show();
         
-        var bodyDiv = $('<div></div>').addClass("process-panel-inner").appendTo(this._div);
-        $('<img src="images/small-spinner.gif" />')
-            .css("float", "right")
-            .css("margin-left", "10px")
-            .css("margin-bottom", "10px")
-            .css("opacity", "0.3")
-            .appendTo(bodyDiv);
+        var innerDiv = $('<div></div>').addClass("process-panel-inner").appendTo(this._div);
         
+        var headDiv = $('<div></div>').addClass("process-panel-head").appendTo(innerDiv);
+        $('<img src="images/small-spinner.gif" />')
+            .css("margin-right", "3px")
+            .css("opacity", "0.3")
+            .appendTo(headDiv);
+        $('<a href="javascript:{}"></a>')
+            .addClass("action")
+            .text("cancel all")
+            .click(function() {
+                self._cancelAll();
+                $(this).text("canceling all processes...").unbind();
+            })
+            .appendTo(headDiv);
+            
+        var bodyDiv = $('<div></div>').addClass("process-panel-body").appendTo(innerDiv);
         var renderProcess = function(process) {
             var div = $('<div></div>').addClass("process-panel-entry").appendTo(bodyDiv);
             
diff --git a/src/main/webapp/styles/process.css b/src/main/webapp/styles/process.css
index 42700e196..ec6a9cc76 100644
--- a/src/main/webapp/styles/process.css
+++ b/src/main/webapp/styles/process.css
@@ -9,10 +9,17 @@
     border: 1px solid #ccc;
     width: 500px;
     max-height: 70px;
-    overflow: auto;
-    padding: 10px;
     margin: 0 auto;
     text-align: left;
     background: #fffee0;
 }
 
+.process-panel-head {
+    padding: 2px 10px;
+    border-bottom: 1px solid #ccc;
+}
+
+.process-panel-body {
+    overflow: auto;
+    padding: 10px;
+}
\ No newline at end of file