From b0b8a5ec6bcdbeca098ebd1a79e37509c8040826 Mon Sep 17 00:00:00 2001
From: thomasv <thomasv@gitorious>
Date: Tue, 21 Feb 2012 16:01:08 +0100
Subject: [PATCH] sanity check

---
 client/wallet.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/client/wallet.py b/client/wallet.py
index aaf3fbb65..331604f14 100644
--- a/client/wallet.py
+++ b/client/wallet.py
@@ -287,6 +287,7 @@ class Wallet:
     def import_key(self, keypair, password):
         address, key = keypair.split(':')
         if not self.is_valid(address): return False
+        if address in self.all_addresses(): return False
         b = ASecretToSecret( key )
         if not b: return False
         secexp = int( b.encode('hex'), 16)