diff --git a/libethereum/TransactionQueue.cpp b/libethereum/TransactionQueue.cpp
index 40a149ebf..785e16c2d 100644
--- a/libethereum/TransactionQueue.cpp
+++ b/libethereum/TransactionQueue.cpp
@@ -97,7 +97,7 @@ std::unordered_map<h256, Transaction> TransactionQueue::transactions() const
 	ReadGuard l(m_lock);
 	auto ret = m_current;
 	for (auto const& i: m_future)
-		if (i.second.nonce() < maxNonce(i.second.sender()))
+		if (i.second.nonce() < maxNonce_WITH_LOCK(i.second.sender()))
 			ret.insert(i);
 	return ret;
 }
@@ -136,6 +136,11 @@ u256 TransactionQueue::maxNonce(Address const& _a) const
 {
 //	cdebug << "txQ::maxNonce" << _a;
 	ReadGuard l(m_lock);
+	return maxNonce_WITH_LOCK(_a);
+}
+
+u256 TransactionQueue::maxNonce_WITH_LOCK(Address const& _a) const
+{
 	u256 ret = 0;
 	auto r = m_senders.equal_range(_a);
 	for (auto it = r.first; it != r.second; ++it)
diff --git a/libethereum/TransactionQueue.h b/libethereum/TransactionQueue.h
index 6036caa83..a07efb848 100644
--- a/libethereum/TransactionQueue.h
+++ b/libethereum/TransactionQueue.h
@@ -72,6 +72,7 @@ private:
 
 	void insertCurrent_WITH_LOCK(std::pair<h256, Transaction> const& _p);
 	bool remove_WITH_LOCK(h256 const& _txHash);
+	u256 maxNonce_WITH_LOCK(Address const& _a) const;
 
 	mutable SharedMutex m_lock;													///< General lock.
 	h256Hash m_known;															///< Hashes of transactions in both sets.
diff --git a/libp2p/Host.cpp b/libp2p/Host.cpp
index 2f139fd3d..9c3e629d4 100644
--- a/libp2p/Host.cpp
+++ b/libp2p/Host.cpp
@@ -392,7 +392,7 @@ string Host::pocHost()
 std::unordered_map<Public, std::string> const& Host::pocHosts()
 {
 	static const std::unordered_map<Public, std::string> c_ret = {
-//		{ Public(""), "poc-9.ethdev.com:30303" },
+		{ Public("487611428e6c99a11a9795a6abe7b529e81315ca6aad66e2a2fc76e3adf263faba0d35466c2f8f68d561dbefa8878d4df5f1f2ddb1fbeab7f42ffb8cd328bd4a"), "poc-9.ethdev.com:30303" },
 		{ Public("a979fb575495b8d6db44f750317d0f4622bf4c2aa3365d6af7c284339968eef29b69ad0dce72a4d8db5ebb4968de0e3bec910127f134779fbcb0cb6d3331163c"), "52.16.188.185:30303" },
 		{ Public("7f25d3eab333a6b98a8b5ed68d962bb22c876ffcd5561fca54e3c2ef27f754df6f7fd7c9b74cc919067abac154fb8e1f8385505954f161ae440abc355855e034"), "54.207.93.166:30303" }
 	};