diff --git a/greeter/authenticator.cpp b/greeter/authenticator.cpp
--- a/greeter/authenticator.cpp
+++ b/greeter/authenticator.cpp
@@ -241,6 +241,18 @@
             emit error(QString::fromLocal8Bit(arr));
             ::free( arr );
             return;
+        case ConvPutAuthSucceeded:
+            emit succeeded();
+            return;
+        case ConvPutAuthFailed:
+            emit failed();
+            return;
+        case ConvPutAuthError:
+            cantCheck();
+            return;
+        case ConvPutAuthAbort:
+            // what to do here?
+            return;
         }
     }
     reapVerify();
@@ -258,18 +270,6 @@
             cantCheck();
             return;
         }
-    if (WIFEXITED(status))
-        switch (WEXITSTATUS(status)) {
-        case AuthOk:
-            emit succeeded();
-            return;
-        case AuthBad:
-            emit failed();
-            return;
-        case AuthAbort:
-            return;
-        }
-    cantCheck();
 }
 
 void KCheckPass::cantCheck()
diff --git a/kcheckpass/kcheckpass-enums.h b/kcheckpass/kcheckpass-enums.h
--- a/kcheckpass/kcheckpass-enums.h
+++ b/kcheckpass/kcheckpass-enums.h
@@ -54,7 +54,11 @@
     ConvGetNormal,
     ConvGetHidden,
     ConvPutInfo,
-    ConvPutError
+    ConvPutError,
+    ConvPutAuthSucceeded,
+    ConvPutAuthFailed,
+    ConvPutAuthError,
+    ConvPutAuthAbort
 } ConvRequest;
 
 /* these must match the defs in kgreeterplugin.h */
diff --git a/kcheckpass/kcheckpass.c b/kcheckpass/kcheckpass.c
--- a/kcheckpass/kcheckpass.c
+++ b/kcheckpass/kcheckpass.c
@@ -266,6 +266,11 @@
 	  nullpass = 1;
 	return msg;
       }
+    case ConvPutAuthSucceeded:
+    case ConvPutAuthFailed:
+    case ConvPutAuthError:
+    case ConvPutAuthAbort:
+        return 0;
     case ConvPutInfo:
     case ConvPutError:
     default:
@@ -406,8 +411,23 @@
         syslog(LOG_NOTICE, "Authentication failure for %s (invoked by uid %d)", username, uid);
       }
     }
+    switch (ret) {
+        case AuthOk:
+            conv_server(ConvPutAuthSucceeded, 0);
+            break;
+        case AuthBad:
+            conv_server(ConvPutAuthFailed, 0);
+            break;
+        case AuthError:
+            conv_server(ConvPutAuthError, 0);
+            break;
+        case AuthAbort:
+            conv_server(ConvPutAuthAbort, 0);
+        default:
+            break;
+    }
 
-  return ret;
+  return 0;
 }
 
 void