Index: /trunk/src/VBox/VMM/VM.cpp
===================================================================
--- /trunk/src/VBox/VMM/VM.cpp	(revision 24029)
+++ /trunk/src/VBox/VMM/VM.cpp	(revision 24030)
@@ -272,4 +272,12 @@
 #endif
                     break;
+
+                case VERR_SVM_IN_USE:
+#ifdef RT_OS_LINUX
+                    pszError = N_("VirtualBox can't enable the AMD-V extension. "
+                                  "Please disable the KVM kernel extension, recompile your kernel and reboot");
+#else
+                    pszError = N_("VirtualBox can't enable the AMD-V extension. Please close all other virtualization programs.");
+#endif
 
                 case VERR_VERSION_MISMATCH: