diff -ur gnupg-2.0.10.orig/agent/command.c gnupg-2.0.10/agent/command.c

--- gnupg-2.0.10.orig/agent/command.c	2008-12-10 14:51:28 +0300

+++ gnupg-2.0.10/agent/command.c	2009-03-03 14:21:43 +0300

@@ -918,8 +918,36 @@

   if (!strcmp (desc, "X"))

     desc = NULL;

+retry:

   pw = cacheid ? agent_get_cache (cacheid, CACHE_MODE_NORMAL, &cache_marker)

                : NULL;

+  if (!pw)

+        {

+

+      /* If the pinentry is currently in use, we wait up to 60 seconds

+         for it to close and check the cache again.  This solves a common

+         situation where several requests for unprotecting a key have

+         been made but the user is still entering the passphrase for

+         the first request.  Because all requests to agent_askpin are

+         serialized they would then pop up one after the other to

+         request the passphrase - despite that the user has already

+         entered it and is then available in the cache.  This

+         implementation is not race free but in the worst case the

+         user has to enter the passphrase only once more. */

+      if (pinentry_active_p (ctrl, 0))

+        {

+          /* Active - wait */

+          if (!pinentry_active_p (ctrl, 60))

+            {

+              /* We need to give the other thread a chance to actually put

+                 it into the cache. */

+              pth_sleep (1); 

+              goto retry;

+            }

+          /* Timeout - better call pinentry now the plain way. */

+        }

+    }

+

   if (pw)

     {

       rc = send_back_passphrase (ctx, opt_data, pw);