diff --git a/src/LedgerEntrySet.cpp b/src/LedgerEntrySet.cpp
index d074f902d1..e42be001db 100644
--- a/src/LedgerEntrySet.cpp
+++ b/src/LedgerEntrySet.cpp
@@ -318,7 +318,7 @@ bool LedgerEntrySet::threadTx(SLE::ref threadTo, Ledger::ref ledger,
 	uint32 prevLgrID;
 	if (!threadTo->thread(mSet.getTxID(), mSet.getLgrSeq(), prevTxID, prevLgrID))
 		return false;
-	if (TransactionMetaSet::thread(mSet.getAffectedNode(threadTo->getIndex(), sfModifiedNode, false),
+	if (TransactionMetaSet::thread(mSet.getAffectedNode(threadTo->getIndex(), sfModifiedNode),
 			prevTxID, prevLgrID))
 		return true;
 	assert(false);
@@ -395,7 +395,7 @@ void LedgerEntrySet::calcRawMeta(Serializer& s, TER result)
 			continue;
 
 		SLE::pointer curNode = it->second.mEntry;
-		STObject &metaNode = mSet.getAffectedNode(it->first, *type, true);
+		mSet.setAffectedNode(it->first, *type);
 
 		if (type == &sfDeletedNode)
 		{
@@ -406,16 +406,16 @@ void LedgerEntrySet::calcRawMeta(Serializer& s, TER result)
 			{ // node has an amount, covers ripple state nodes
 				STAmount amount = origNode->getFieldAmount(sfAmount);
 				if (amount.isNonZero())
-					metaNode.setFieldAmount(sfPreviousBalance, amount);
+					mSet.getAffectedNode(it->first).setFieldAmount(sfPreviousBalance, amount);
 				amount = curNode->getFieldAmount(sfAmount);
 				if (amount.isNonZero())
-					metaNode.setFieldAmount(sfFinalBalance, amount);
+					mSet.getAffectedNode(it->first).setFieldAmount(sfFinalBalance, amount);
 
 				if (origNode->getType() == ltRIPPLE_STATE)
 				{
-					metaNode.setFieldAccount(sfLowID,
+					mSet.getAffectedNode(it->first).setFieldAccount(sfLowID,
 						NewcoinAddress::createAccountID(origNode->getFieldAmount(sfLowLimit).getIssuer()));
-					metaNode.setFieldAccount(sfHighID,
+					mSet.getAffectedNode(it->first).setFieldAccount(sfHighID,
 						NewcoinAddress::createAccountID(origNode->getFieldAmount(sfHighLimit).getIssuer()));
 				}
 			}
@@ -424,10 +424,10 @@ void LedgerEntrySet::calcRawMeta(Serializer& s, TER result)
 			{ // check for non-zero balances
 				STAmount amount = origNode->getFieldAmount(sfTakerPays);
 				if (amount.isNonZero())
-					metaNode.setFieldAmount(sfFinalTakerPays, amount);
+					mSet.getAffectedNode(it->first).setFieldAmount(sfFinalTakerPays, amount);
 				amount = origNode->getFieldAmount(sfTakerGets);
 				if (amount.isNonZero())
-					metaNode.setFieldAmount(sfFinalTakerGets, amount);
+					mSet.getAffectedNode(it->first).setFieldAmount(sfFinalTakerGets, amount);
 			}
 
 		}
@@ -451,17 +451,17 @@ void LedgerEntrySet::calcRawMeta(Serializer& s, TER result)
 			{ // node has an amount, covers account root nodes and ripple nodes
 				STAmount amount = origNode->getFieldAmount(sfAmount);
 				if (amount != curNode->getFieldAmount(sfAmount))
-					metaNode.setFieldAmount(sfPreviousBalance, amount);
+					mSet.getAffectedNode(it->first).setFieldAmount(sfPreviousBalance, amount);
 			}
 
 			if (origNode->getType() == ltOFFER)
 			{
 				STAmount amount = origNode->getFieldAmount(sfTakerPays);
 				if (amount != curNode->getFieldAmount(sfTakerPays))
-					metaNode.setFieldAmount(sfPreviousTakerPays, amount);
+					mSet.getAffectedNode(it->first).setFieldAmount(sfPreviousTakerPays, amount);
 				amount = origNode->getFieldAmount(sfTakerGets);
 				if (amount != curNode->getFieldAmount(sfTakerGets))
-					metaNode.setFieldAmount(sfPreviousTakerGets, amount);
+					mSet.getAffectedNode(it->first).setFieldAmount(sfPreviousTakerGets, amount);
 			}
 
 		}
diff --git a/src/SerializedObject.h b/src/SerializedObject.h
index 69683ed497..0c94259174 100644
--- a/src/SerializedObject.h
+++ b/src/SerializedObject.h
@@ -170,7 +170,9 @@ protected:
 public:
 
 	STArray()																{ ; }
+	STArray(int n)															{ value.reserve(n); }
 	STArray(SField::ref f) : SerializedType(f)								{ ; }
+	STArray(SField::ref f, int n) : SerializedType(f)						{ value.reserve(n); }
 	STArray(SField::ref f, const vector& v) : SerializedType(f), value(v)	{ ; }
 	STArray(vector& v) : value(v)											{ ; }
 
diff --git a/src/SerializedTypes.h b/src/SerializedTypes.h
index d7df1d1b71..fadc452e07 100644
--- a/src/SerializedTypes.h
+++ b/src/SerializedTypes.h
@@ -36,13 +36,11 @@ protected:
 	SField::ptr	fName;
 
 	virtual SerializedType* duplicate() const { return new SerializedType(*fName); }
-	SerializedType(SField::ptr n) : fName(n) { assert(fName); }
 
 public:
 
 	SerializedType() : fName(&sfGeneric) { ; }
 	SerializedType(SField::ref n) : fName(&n) { assert(fName); }
-	SerializedType(const SerializedType& n) : fName(n.fName) { ; }
 	virtual ~SerializedType() { ; }
 
 	static std::auto_ptr<SerializedType> deserialize(SField::ref name)
diff --git a/src/TransactionMeta.cpp b/src/TransactionMeta.cpp
index 30117e1e7f..b6b33a98f3 100644
--- a/src/TransactionMeta.cpp
+++ b/src/TransactionMeta.cpp
@@ -6,8 +6,10 @@
 #include <boost/bind.hpp>
 #include <boost/foreach.hpp>
 
+#include "Log.h"
+
 TransactionMetaSet::TransactionMetaSet(const uint256& txid, uint32 ledger, const std::vector<unsigned char>& vec) :
-	mTransactionID(txid), mLedger(ledger), mNodes(sfAffectedNodes)
+	mTransactionID(txid), mLedger(ledger), mNodes(sfAffectedNodes, 32)
 {
 	Serializer s(vec);
 	SerializerIterator sit(s);
@@ -29,15 +31,14 @@ bool TransactionMetaSet::isNodeAffected(const uint256& node) const
 	return false;
 }
 
-STObject& TransactionMetaSet::getAffectedNode(const uint256& node, SField::ref type, bool overrideType)
-{
+void TransactionMetaSet::setAffectedNode(const uint256& node, SField::ref type)
+{ // make sure the node exists and force its type
 	for (STArray::iterator it = mNodes.begin(); it != mNodes.end(); ++it)
 	{
 		if (it->getFieldH256(sfLedgerIndex) == node)
 		{
-			if (overrideType)
-				it->setFName(type);
-			return *it;
+			it->setFName(type);
+			return;
 		}
 	}
 
@@ -46,8 +47,35 @@ STObject& TransactionMetaSet::getAffectedNode(const uint256& node, SField::ref t
 
 	assert(obj.getFName() == type);
 	obj.setFieldH256(sfLedgerIndex, node);
+}
 
-	return mNodes.back();
+STObject& TransactionMetaSet::getAffectedNode(const uint256& node, SField::ref type)
+{
+	assert(&type);
+	for (STArray::iterator it = mNodes.begin(); it != mNodes.end(); ++it)
+	{
+		if (it->getFieldH256(sfLedgerIndex) == node)
+			return *it;
+	}
+
+	mNodes.push_back(STObject(sfModifiedNode));
+	STObject& obj = mNodes.back();
+
+	assert(obj.getFName() == type);
+	obj.setFieldH256(sfLedgerIndex, node);
+
+	return obj;
+}
+
+STObject& TransactionMetaSet::getAffectedNode(const uint256& node)
+{
+	for (STArray::iterator it = mNodes.begin(); it != mNodes.end(); ++it)
+	{
+		if (it->getFieldH256(sfLedgerIndex) == node)
+			return *it;
+	}
+	assert(false);
+	throw std::runtime_error("Affected node not found");
 }
 
 const STObject& TransactionMetaSet::peekAffectedNode(const uint256& node) const
@@ -62,7 +90,7 @@ void TransactionMetaSet::init(const uint256& id, uint32 ledger)
 {
 	mTransactionID = id;
 	mLedger = ledger;
-	mNodes = STArray(sfAffectedNodes);
+	mNodes = STArray(sfAffectedNodes, 32);
 }
 
 void TransactionMetaSet::swap(TransactionMetaSet& s)
diff --git a/src/TransactionMeta.h b/src/TransactionMeta.h
index 81b8c2a44d..100b099004 100644
--- a/src/TransactionMeta.h
+++ b/src/TransactionMeta.h
@@ -39,7 +39,9 @@ public:
 	uint32 getLgrSeq()			{ return mLedger; }
 
 	bool isNodeAffected(const uint256&) const;
-	STObject& getAffectedNode(const uint256&, SField::ref type, bool overrideType);
+	void setAffectedNode(const uint256&, SField::ref type);
+	STObject& getAffectedNode(const uint256&, SField::ref type);
+	STObject& getAffectedNode(const uint256&);
 	const STObject& peekAffectedNode(const uint256&) const;
 
 	Json::Value getJson(int p) const { return getAsObject().getJson(p); }