diff --git a/CHANGELOG b/CHANGELOG
index 9cfadc6..a380e91 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,10 @@
 Version 1.0
 
+2005-05-25:
+	
+	* solved problems install-problems: use at least scons 0.96.90
+	* minor tweaks to buildsystem
+
 2005-05-24:
 
 	* updated documentation
diff --git a/SConstruct b/SConstruct
index 8dca801..24edcd3 100644
--- a/SConstruct
+++ b/SConstruct
@@ -7,6 +7,7 @@
 
 import sys
 import os
+from scons_alock import *
 
 alock_name = 'alock'
 alock_version = '1.0'
@@ -30,7 +31,7 @@ alock_doc_files = [
     'alock.1' ]
 
 Default(alock_target)
-SConsignFile()
+SConsignFile('SConsign')
 
 alock_options = Options(alock_optfile)
 alock_options.AddOptions(
@@ -55,7 +56,8 @@ alock_options.AddOptions(
 
 alock_env = Environment(options = alock_options,
                          TARFLAGS = '-c -z',
-                         TARSUFFIX = '.tgz')
+                         TARSUFFIX = '.tgz' 
+                       )
 alock_options.Update(alock_env)
 Help(alock_options.GenerateHelpText(alock_env))
 
@@ -67,7 +69,7 @@ alock_instdir_bin = os.path.join(alock_instdir,'bin')
 alock_instdir_data = os.path.join(alock_instdir,'share')
 alock_instdir_meta = os.path.join(alock_instdir_data, alock_name + '-' + alock_version)
 alock_instdir_meta_contrib = os.path.join(alock_instdir_meta, 'contrib')
-alock_instdir_man = os.path.join(alock_instdir_data, os.path.join('man', 'man1'))
+alock_instdir_man = os.path.join(alock_instdir, os.path.join('man', 'man1'))
 
 ###########################################################
 #
@@ -164,8 +166,6 @@ if alock_env['xrender']:
     conf.Finish()
 
         
-
-            
 ############################################################################
 #
 #
@@ -187,21 +187,14 @@ alock_options.Save('scons.opts', alock_env)
 # building
 
 alock_program = SConscript( 'src/SConscript', exports = ['alock_env'])
-
-
-def createManPage(target, source, env):
-    os.system('asciidoc -d manpage -b docbook -o alock.xml ' + str(source[0]))
-    os.system('xmlto man alock.xml')
-    os.remove('alock.xml')
-    return None
-
-def createHtml(target, source, env):
-    os.system('asciidoc -d manpage -b xhtml -o ' + str(target[0]) + ' ' +
-            str(source[0]))
-
 alock_env.Command('alock.1', 'alock.txt', createManPage)
 alock_env.Command('alock.html', 'alock.txt', createHtml)
 
+alock_env.AddPostAction(alock_target, Chmod(alock_target, 0755))
+alock_env.AddPostAction('alock.txt', Chmod('alock.txt', 0644))
+alock_env.AddPostAction('alock.1', Chmod('alock.1', 0644))
+alock_env.AddPostAction('alock.html', Chmod('alock.html', 0644))
+
 ############################################################################
 # 
 # installing
diff --git a/scons_alock.py b/scons_alock.py
new file mode 100644
index 0000000..e860764
--- /dev/null
+++ b/scons_alock.py
@@ -0,0 +1,61 @@
+import os
+import shutil
+
+def createManPage(target, source, env):
+    """Creates a manpage via asciidoc and xmlto."""
+    os.system('asciidoc -d manpage -b docbook -o alock.xml ' + str(source[0]))
+    os.system('xmlto man alock.xml')
+    os.remove('alock.xml')
+    return None
+
+def createHtml(target, source, env):
+    """Creates a html-site via asciidoc."""
+    os.system('asciidoc -d manpage -b xhtml -o ' + str(target[0]) + ' ' +
+            str(source[0]))
+
+def prefixCombiner(prefix, itemlist, glue=''):
+    """Returns a list of items where each element is prepend by given
+    prefix."""
+    result = []
+    for item in itemlist:
+        result.append(prefix + glue + item)
+    return result
+
+# http://scons.tigris.org/servlets/ReadMsg?listName=users&msgNo=2739
+# http://scons.tigris.org/servlets/ReadMsg?list=users&msgNo=2783
+def alock_installFunc(dest, source, env):
+    """Install a source file into a destination by copying it (and its
+    permission/mode bits)."""
+
+    owner = env.get('INSTALL_OWNER', None)
+    if owner:
+        try:
+            uid = pwd.getpwnam(owner)[2]
+        except TypeError:
+            uid = owner
+    else:
+        uid = -1
+
+    group = env.get('INSTALL_GROUP', None)
+    if group:
+        try:
+            gid = grp.getgrnam(group)[2]
+        except TypeError:
+            gid = group
+    else:
+        gid = -1
+
+    mode = env.get('INSTALL_MODE', None)
+    if not mode:
+        st = os.stat(source)
+        mode = (stat.S_IMODE(st[stat.ST_MODE]) | stat.S_IWRITE)
+    if isinstance(mode, str):
+        mode = int(mode, 8)
+
+    shutil.copy2(source, dest)
+
+    if owner or group:
+        os.chown(dest, uid, gid)
+
+    os.chmod(dest, mode)
+    return 0
diff --git a/src/SConscript b/src/SConscript
index 5abd62f..95807c0 100644
--- a/src/SConscript
+++ b/src/SConscript
@@ -33,7 +33,6 @@ if build['xrender']:
 alock_sources += auth_sources + bg_sources + cursor_sources
 
 alock = build.Program('alock', alock_sources)
-build.AddPostAction(alock, Chmod(alock, 0755))
 
 if build['amd5']:
     md5 = alock_env.Copy()