diff --git a/qmake/generators/makefile.cpp b/qmake/generators/makefile.cpp
index 9b46b89..e9b652a 100644
--- a/qmake/generators/makefile.cpp
+++ b/qmake/generators/makefile.cpp
@@ -2142,10 +2142,9 @@ QString MakefileGenerator::build_args()
 bool
 MakefileGenerator::writeHeader(QTextStream &t)
 {
-    time_t foo = time(NULL);
     t << "#############################################################################" << endl;
     t << "# Makefile for building: " << var("TARGET") << endl;
-    t << "# Generated by qmake (" << qmake_version() << ") (Qt " << QT_VERSION_STR << ") on: " << ctime(&foo);
+    t << "# Generated by qmake (" << qmake_version() << ") (Qt " << QT_VERSION_STR << ")" << endl;
     t << "# Project:  " << fileFixify(project->projectFile()) << endl;
     t << "# Template: " << var("TEMPLATE") << endl;
     t << "# Command: " << build_args() << endl;
diff --git a/qmake/generators/projectgenerator.cpp b/qmake/generators/projectgenerator.cpp
index f3d4633..cae7b8f 100644
--- a/qmake/generators/projectgenerator.cpp
+++ b/qmake/generators/projectgenerator.cpp
@@ -345,7 +345,7 @@ bool
 ProjectGenerator::writeMakefile(QTextStream &t)
 {
     t << "######################################################################" << endl;
-    t << "# Automatically generated by qmake (" << qmake_version() << ") " << QDateTime::currentDateTime().toString() << endl;
+    t << "# Automatically generated by qmake (" << qmake_version() << ") " << endl;
     t << "######################################################################" << endl << endl;
     QStringList::Iterator it;
     for(it = Option::before_user_vars.begin(); it != Option::before_user_vars.end(); ++it)
diff --git a/qmake/generators/unix/unixmake2.cpp b/qmake/generators/unix/unixmake2.cpp
index d1ed572..3d07ea5 100644
--- a/qmake/generators/unix/unixmake2.cpp
+++ b/qmake/generators/unix/unixmake2.cpp
@@ -1452,9 +1452,8 @@ UnixMakefileGenerator::writeLibtoolFile()
 
     QTextStream t(&ft);
     t << "# " << lname << " - a libtool library file\n";
-    time_t now = time(NULL);
     t << "# Generated by qmake/libtool (" << qmake_version() << ") (Qt "
-      << QT_VERSION_STR << ") on: " << ctime(&now) << "\n";
+      << QT_VERSION_STR << ")\n";
 
     t << "# The name that we can dlopen(3).\n"
       << "dlname='" << var(project->isActiveConfig("plugin") ? "TARGET" : "TARGET_x")
diff --git a/src/moc/moc.y b/src/moc/moc.y
index 90f72ab..453f765 100644
--- a/src/moc/moc.y
+++ b/src/moc/moc.y
@@ -2833,7 +2833,7 @@ void generateClass()		      // generate C++ source code for a class
 {
     const char *hdr1 = "/****************************************************************************\n"
 		 "** %s meta object code from reading C++ file '%s'\n**\n";
-    const char *hdr2 = "** Created: %s\n";
+    const char *hdr2 = "** Created by: The Qt Meta Object Compiler version %d (Qt %s)\n";
     const char *hdr3 = "** WARNING! All changes made in this file will be lost!\n";
     const char *hdr4 = "*****************************************************************************/\n\n";
     int   i;
@@ -2863,8 +2863,6 @@ void generateClass()		      // generate C++ source code for a class
     g->gen_count++;
 
     if ( g->gen_count == 1 ) {			// first class to be generated
-	QDateTime dt = QDateTime::currentDateTime();
-	QCString dstr = dt.toString().ascii();
 	QCString fn = g->fileName;
 	i = g->fileName.length()-1;
 	while ( i>0 && g->fileName[i-1] != '/' && g->fileName[i-1] != '\\' )
@@ -2872,7 +2870,7 @@ void generateClass()		      // generate C++ source code for a class
 	if ( i >= 0 )
 	    fn = &g->fileName[i];
 	fprintf( out, hdr1, (const char*)qualifiedClassName(),(const char*)fn);
-	fprintf( out, hdr2, (const char*)dstr );
+	fprintf( out, hdr2, formatRevision, QT_VERSION_STR );
 	fprintf( out, "%s", hdr3 );
 	fprintf( out, "%s", hdr4 );
 
diff --git a/src/moc/moc_yacc.cpp b/src/moc/moc_yacc.cpp
index bf152b3..5f57cb1 100644
--- a/src/moc/moc_yacc.cpp
+++ b/src/moc/moc_yacc.cpp
@@ -5659,7 +5659,7 @@ void generateClass()		      // generate C++ source code for a class
 {
     const char *hdr1 = "/****************************************************************************\n"
 		 "** %s meta object code from reading C++ file '%s'\n**\n";
-    const char *hdr2 = "** Created: %s\n";
+    const char *hdr2 = "** Created by: The Qt Meta Object Compiler version %d (Qt %s)\n";
     const char *hdr3 = "** WARNING! All changes made in this file will be lost!\n";
     const char *hdr4 = "*****************************************************************************/\n\n";
     int   i;
@@ -5689,8 +5689,6 @@ void generateClass()		      // generate C++ source code for a class
     g->gen_count++;
 
     if ( g->gen_count == 1 ) {			// first class to be generated
-	QDateTime dt = QDateTime::currentDateTime();
-	QCString dstr = dt.toString().ascii();
 	QCString fn = g->fileName;
 	i = g->fileName.length()-1;
 	while ( i>0 && g->fileName[i-1] != '/' && g->fileName[i-1] != '\\' )
@@ -5698,7 +5696,7 @@ void generateClass()		      // generate C++ source code for a class
 	if ( i >= 0 )
 	    fn = &g->fileName[i];
 	fprintf( out, hdr1, (const char*)qualifiedClassName(),(const char*)fn);
-	fprintf( out, hdr2, (const char*)dstr );
+	fprintf( out, hdr2, formatRevision, QT_VERSION_STR );
 	fprintf( out, "%s", hdr3 );
 	fprintf( out, "%s", hdr4 );
 
diff --git a/tools/designer/uic/embed.cpp b/tools/designer/uic/embed.cpp
index b0ca530..444183f 100644
--- a/tools/designer/uic/embed.cpp
+++ b/tools/designer/uic/embed.cpp
@@ -137,7 +137,7 @@ void Uic::embed( QTextStream& out, const char* project, const QStringList& image
     for ( it = images.begin(); it != images.end(); ++it )
 	out << "**      " << *it << "\n";
     out << "**\n";
-    out << "** Created: " << QDateTime::currentDateTime().toString() << "\n";
+    out << "** Created by: The Qt user interface compiler (Qt " << QT_VERSION_STR << ")\n";
     out << "**\n";
     out << "** WARNING! All changes made in this file will be lost!\n";
     out << "****************************************************************************/\n";
diff --git a/tools/designer/uic/main.cpp b/tools/designer/uic/main.cpp
index ace2033..60bc9dd 100644
--- a/tools/designer/uic/main.cpp
+++ b/tools/designer/uic/main.cpp
@@ -320,7 +320,7 @@ int main( int argc, char * argv[] )
 	out << "/****************************************************************************" << endl;
 	out << "** Form "<< (impl? "implementation" : "interface") << " generated from reading ui file '" << fileName << "'" << endl;
 	out << "**" << endl;
-	out << "** Created: " << QDateTime::currentDateTime().toString() << endl;
+	out << "** Created by: The Qt user interface compiler (Qt " << QT_VERSION_STR << ")" << endl;
 	out << "**" << endl;
 	out << "** WARNING! All changes made in this file will be lost!" << endl;
 	out << "****************************************************************************/" << endl << endl;