diff -r 56cd8111b7f7 -r 41300fa6a67c src/network/access/qnetworkaccesshttpbackend.cpp
--- a/src/network/access/qnetworkaccesshttpbackend.cpp	Tue Jan 26 12:42:25 2010 +0200
+++ b/src/network/access/qnetworkaccesshttpbackend.cpp	Tue Feb 02 00:43:10 2010 +0200
@@ -732,7 +732,7 @@
     for (; it != end; ++it) {
         QByteArray value = rawHeader(it->first);
         if (!value.isEmpty()) {
-            if (it->first.toLower() == "set-cookie")
+            if (qstricmp(it->first.constData(), "set-cookie") == 0)
                 value += "\n";
             else
                 value += ", ";