diff --git a/Descriptors/DescriptionFactory.h b/Descriptors/DescriptionFactory.h
index e38fb10fb..52adc2713 100644
--- a/Descriptors/DescriptionFactory.h
+++ b/Descriptors/DescriptionFactory.h
@@ -53,13 +53,9 @@ public:
         _RouteSummary() : lengthString("0"), durationString("0"), startName(0), destName(0) {}
         void BuildDurationAndLengthStrings(const double distance, const unsigned time) {
             //compute distance/duration for route summary
-            std::ostringstream s;
-            s << round(distance);
-            lengthString = s.str();
+            intToString(round(distance), lengthString);
             int travelTime = time/10 + 1;
-            s.str("");
-            s << travelTime;
-            durationString = s.str();
+            intToString(travelTime, durationString);
         }
     } summary;
 
diff --git a/Server/BasicDatastructures.h b/Server/BasicDatastructures.h
index c01d5d34a..cf3aa133f 100644
--- a/Server/BasicDatastructures.h
+++ b/Server/BasicDatastructures.h
@@ -21,8 +21,11 @@ or see http://www.gnu.org/licenses/agpl.txt.
 #ifndef BASIC_DATASTRUCTURES_H
 #define BASIC_DATASTRUCTURES_H
 #include <string>
+#include <boost/foreach.hpp>
 #include <boost/lexical_cast.hpp>
 
+#include "../Util/StringUtil.h"
+
 namespace http {
 
 const std::string okString 					= "HTTP/1.0 200 OK\r\n";
@@ -70,15 +73,13 @@ struct Reply {
     std::vector<boost::asio::const_buffer> HeaderstoBuffers();
 	std::string content;
 	static Reply stockReply(status_type status);
-	void setSize(unsigned size) {
-	    for (std::size_t i = 0; i < headers.size(); ++i) {
-	            Header& h = headers[i];
-	            if("Content-Length" == h.name) {
-	                std::stringstream sizeString;
-	                sizeString << size;
-	                h.value = sizeString.str();
-	            }
-	    }
+	void setSize(const unsigned size) {
+		BOOST_FOREACH (const Header& h,  headers) {
+			if("Content-Length" == h.name) {
+				std::string sizeString;
+				intToString(size,h.value );
+			}
+		}
 	}
 };
 
diff --git a/Server/RequestHandler.h b/Server/RequestHandler.h
index 35036a6ba..c801b7971 100644
--- a/Server/RequestHandler.h
+++ b/Server/RequestHandler.h
@@ -33,6 +33,7 @@ or see http://www.gnu.org/licenses/agpl.txt.
 #include "../DataStructures/HashTable.h"
 #include "../Plugins/BasePlugin.h"
 #include "../Plugins/RouteParameters.h"
+#include "../Util/StringUtil.h"
 #include "../typedefs.h"
 
 namespace http {
@@ -71,16 +72,17 @@ public:
             bool result = boost::spirit::qi::parse(it, request.end(), apiParser);    // returns true if successful
             if (!result || (it != request.end()) ) {
                 rep = http::Reply::stockReply(http::Reply::badRequest);
-                std::stringstream content;
                 int position = std::distance(request.begin(), it);
-                content << "Input seems to be malformed close to position " << position << "<br>";
-                content << "<pre>";
-                content << req.uri << "<br>";
+                std::string tmp_position_string;
+                intToString(position, tmp_position_string);
+                rep.content += "Input seems to be malformed close to position ";
+                rep.content += "<br><pre>";
+                rep.content += request;
+                rep.content += tmp_position_string;
+                rep.content += "<br>";
                 for(unsigned i = 0, end = std::distance(request.begin(), it); i < end; ++i)
-                    content << "&nbsp;";
-                content << "^" << "<br>";
-                content << "</pre>";
-                rep.content += content.str();
+                    rep.content += "&nbsp;";
+                rep.content += "^<br></pre>";
             } else {
                 //Finished parsing, lets call the right plugin to handle the request
                 if(pluginMap.Holds(routeParameters.service)) {
diff --git a/Util/StringUtil.h b/Util/StringUtil.h
index 32e147c1f..0dc6df007 100644
--- a/Util/StringUtil.h
+++ b/Util/StringUtil.h
@@ -21,14 +21,14 @@ or see http://www.gnu.org/licenses/agpl.txt.
 #ifndef STRINGUTIL_H_
 #define STRINGUTIL_H_
 
-#include <cstdio>
-#include <cstdlib>
 #include <string>
-#include <sstream>
+#include <boost/algorithm/string.hpp>
 
 #include <boost/spirit/include/karma.hpp>
 #include <boost/spirit/include/qi.hpp>
 
+#include <cstdio>
+
 #include "../DataStructures/Coordinate.h"
 #include "../typedefs.h"
 
@@ -80,6 +80,20 @@ static inline int stringToInt(const std::string& input) {
     return value;
 }
 
+static inline void doubleToString(const double value, std::string & output){
+    output.clear();
+    std::back_insert_iterator<std::string> sink(output);
+    boost::spirit::karma::generate(sink, boost::spirit::karma::double_, value);
+}
+
+static inline void doubleToStringWithTwoDigitsBehindComma(const double value, std::string & output){
+    // The largest 32-bit integer is 4294967295, that is 10 chars
+    // On the safe side, add 1 for sign, and 1 for trailing zero
+    char buffer[12] ;
+    sprintf(buffer, "%g", value) ;
+    output = buffer ;
+}
+
 static inline void convertInternalLatLonToString(const int value, std::string & output) {
     char buffer[100];
     buffer[10] = 0; // Nullterminierung
@@ -106,70 +120,37 @@ static inline void convertInternalReversedCoordinateToString(const _Coordinate &
     output += " ";
 }
 
-static inline void doubleToString(const double value, std::string & output){
-    // The largest 32-bit integer is 4294967295, that is 10 chars
-    // On the safe side, add 1 for sign, and 1 for trailing zero
-    char buffer[12] ;
-    sprintf(buffer, "%f", value) ;
-    output = buffer ;
-}
-
-static inline void doubleToStringWithTwoDigitsBehindComma(const double value, std::string & output){
-    // The largest 32-bit integer is 4294967295, that is 10 chars
-    // On the safe side, add 1 for sign, and 1 for trailing zero
-    char buffer[12] ;
-    sprintf(buffer, "%g", value) ;
-    output = buffer ;
-}
-
-inline std::string & replaceAll(std::string &s, const std::string &sub, const std::string &other) {
-    assert(!sub.empty());
-    size_t b = 0;
-    for (;;) {
-        b = s.find(sub, b);
-        if (b == s.npos) break;
-        s.replace(b, sub.size(), other);
-        b += other.size();
-    }
-    return s;
+inline void replaceAll(std::string &s, const std::string &sub, const std::string &other) {
+	boost::replace_all(s, sub, other);
 }
 
 inline void stringSplit(const std::string &s, const char delim, std::vector<std::string>& result) {
-    std::stringstream ss(s);
-    std::string item;
-    while(std::getline(ss, item, delim)) {
-        if(item.size() > 0)
-            result.push_back(item);
-    }
+	boost::split(result, s, boost::is_any_of(std::string(&delim)));
 }
 
-
 static std::string originals[] = {"&", "\"",  "<",  ">", "'", "[", "]", "\\"};
 static std::string entities[] = {"&amp;", "&quot;", "&lt;", "&gt;", "&#39;", "&91;", "&93;", " &#92;" };
 
-inline std::string HTMLEntitize( std::string result) {
-    for(unsigned i = 0; i < sizeof(originals)/sizeof(std::string); i++) {
-        result = replaceAll(result, originals[i], entities[i]);
+inline std::string HTMLEntitize( std::string & result) {
+    for(unsigned i = 0; i < sizeof(originals)/sizeof(std::string); ++i) {
+        replaceAll(result, originals[i], entities[i]);
     }
     return result;
 }
 
-inline std::string HTMLDeEntitize( std::string result) {
-    for(unsigned i = 0; i < sizeof(originals)/sizeof(std::string); i++) {
-        result = replaceAll(result, entities[i], originals[i]);
+inline std::string HTMLDeEntitize( std::string & result) {
+    for(unsigned i = 0; i < sizeof(originals)/sizeof(std::string); ++i) {
+        replaceAll(result, entities[i], originals[i]);
     }
     return result;
 }
 
-inline bool StringStartsWith(std::string & input, std::string & prefix) {
-    return (input.find(prefix) == 0);
+inline bool StringStartsWith(const std::string & input, const std::string & prefix) {
+    return boost::starts_with(input, prefix);
 }
 
-
-/*
- * Function returns a 'random' filename in temporary directors.
- * May not be platform independent.
- */
+// Function returns a 'random' filename in temporary directors.
+// May not be platform independent.
 inline void GetTemporaryFileName(std::string & filename) {
     char buffer[L_tmpnam];
     char * retPointer = tmpnam (buffer);