Index: uspace/drv/vhc/hc.c
===================================================================
--- uspace/drv/vhc/hc.c	(revision 9fe6e7d91ac248be0372c8a646fc6ff5a2c2e82a)
+++ uspace/drv/vhc/hc.c	(revision f8597cabdd3924895ee98ca094e1d0c0220e85a7)
@@ -50,7 +50,7 @@
 #include "hub.h"
 
-#define USLEEP_BASE (0 * 500 * 1000)
+#define USLEEP_BASE (0 * 5 * 1000)
 
-#define USLEEP_VAR 5000
+#define USLEEP_VAR 50
 
 #define SHORTENING_VAR 15
@@ -89,5 +89,5 @@
     usb_transaction_outcome_t outcome)
 {
-	dprintf(3, "processing transaction " TRANSACTION_FORMAT ", outcome: %s",
+	dprintf(3, "transaction " TRANSACTION_FORMAT " done, outcome: %s",
 	    TRANSACTION_PRINTF(*transaction),
 	    usb_str_transaction_outcome(outcome));
@@ -116,5 +116,5 @@
 		char ports[HUB_PORT_COUNT + 2];
 		hub_get_port_statuses(ports, HUB_PORT_COUNT + 1);
-		dprintf(0, "virtual hub: addr=%d ports=%s",
+		dprintf(4, "virtual hub: addr=%d ports=%s",
 		    virthub_dev.address, ports);
 		
@@ -124,4 +124,8 @@
 		list_remove(first_transaction_link);
 		
+
+		dprintf(0, "about to process " TRANSACTION_FORMAT " (vhub:%s)",
+		    TRANSACTION_PRINTF(*transaction), ports);
+
 		dprintf(3, "processing transaction " TRANSACTION_FORMAT "",
 		    TRANSACTION_PRINTF(*transaction));
Index: uspace/drv/vhc/hcd.c
===================================================================
--- uspace/drv/vhc/hcd.c	(revision 9fe6e7d91ac248be0372c8a646fc6ff5a2c2e82a)
+++ uspace/drv/vhc/hcd.c	(revision f8597cabdd3924895ee98ca094e1d0c0220e85a7)
@@ -110,5 +110,5 @@
 	printf("%s: virtual USB host controller driver.\n", NAME);
 
-	usb_dprintf_enable(NAME, 2);
+	usb_dprintf_enable(NAME, 0);
 
 	fid_t fid = fibril_create(hc_manager_fibril, NULL);
Index: uspace/drv/vhc/hub.c
===================================================================
--- uspace/drv/vhc/hub.c	(revision 9fe6e7d91ac248be0372c8a646fc6ff5a2c2e82a)
+++ uspace/drv/vhc/hub.c	(revision f8597cabdd3924895ee98ca094e1d0c0220e85a7)
@@ -144,5 +144,5 @@
 	.ops = &hub_ops,
 	.descriptors = &descriptors,
-	.lib_debug_level = 1,
+	.lib_debug_level = 0,
 	.lib_debug_enabled_tags = USBVIRT_DEBUGTAG_ALL
 };