diff -r d0420ab97345 tools/python/xen/util/blkif.py
--- a/tools/python/xen/util/blkif.py	Fri May 21 16:21:39 2010 +0100
+++ b/tools/python/xen/util/blkif.py	Sat May 22 01:21:15 2010 +0400
@@ -87,7 +87,7 @@
                 fn = "/dev/%s" %(fn,)
                
         if typ in ("tap", "tap2"):
-            (taptype, fn) = fn.split(":", 1)
+            (taptype, fn) = fn.split(":", 2)[1:]
     return (fn, taptype)
 
 def blkdev_uname_to_file(uname):
diff -r d0420ab97345 tools/python/xen/xend/XendDomainInfo.py
--- a/tools/python/xen/xend/XendDomainInfo.py	Fri May 21 16:21:39 2010 +0100
+++ b/tools/python/xen/xend/XendDomainInfo.py	Sat May 22 01:21:15 2010 +0400
@@ -3292,6 +3292,7 @@
                 fn = BOOTLOADER_LOOPBACK_DEVICE
 
             try:
+                time.sleep(5)
                 blcfg = bootloader(blexec, fn, self, False,
                                    bootloader_args, kernel, ramdisk, args)
             finally:
@@ -3299,7 +3300,7 @@
                     log.info("Unmounting %s from %s." %
                              (fn, BOOTLOADER_LOOPBACK_DEVICE))
 
-                    dom0.destroyDevice('tap', BOOTLOADER_LOOPBACK_DEVICE)
+                    dom0.destroyDevice(devtype, BOOTLOADER_LOOPBACK_DEVICE)
 
             if blcfg is None:
                 msg = "Had a bootloader specified, but can't find disk"