Index: /trunk/src/VBox/VMM/VMMR3/EM.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMR3/EM.cpp	(revision 46779)
+++ /trunk/src/VBox/VMM/VMMR3/EM.cpp	(revision 46780)
@@ -2240,5 +2240,9 @@
                  */
                 case VINF_EM_DBG_STEPPED:
+                    /* Commenting this assertion for now as it hinders with single-stepping in new AMD-V code
+                     * (using guest EFLAGS.TF) and returning VINF_EM_DBG_STEPPED in the #DB handler. */
+#if 0
                     AssertMsgFailed(("VINF_EM_DBG_STEPPED cannot be here!"));
+#endif
                 case VINF_EM_DBG_STOP:
                 case VINF_EM_DBG_BREAKPOINT: