diff --git a/scrapy/trunk/docs/ref/extensions.rst b/scrapy/trunk/docs/ref/extensions.rst
index 9a0d26992..28fa84cdd 100644
--- a/scrapy/trunk/docs/ref/extensions.rst
+++ b/scrapy/trunk/docs/ref/extensions.rst
@@ -147,13 +147,13 @@ settings:
 
 Other conditions will be supported in the future.
 
-Stack trace debug extension
+Stack trace dump extension
 ---------------------------
 
 .. module:: scrapy.contrib.debug
    :synopsis: Extensions for debugging Scrapy
 
-.. class:: scrapy.contrib.debug.StackTraceDebug
+.. class:: scrapy.contrib.debug.StackTraceDump
 
 Adds a `SIGUSR1`_ signal handler which dumps the stack trace of a runnning
 Scrapy process when a ``SIGUSR1`` signal is catched. After the stack trace is
diff --git a/scrapy/trunk/docs/ref/settings.rst b/scrapy/trunk/docs/ref/settings.rst
index c2c837a18..83ce87128 100644
--- a/scrapy/trunk/docs/ref/settings.rst
+++ b/scrapy/trunk/docs/ref/settings.rst
@@ -350,7 +350,7 @@ Default::
         'scrapy.contrib.pbcluster.ClusterMasterWeb',
         'scrapy.contrib.pbcluster.ClusterCrawler',
         'scrapy.contrib.closedomain.CloseDomain',
-        'scrapy.contrib.debug.StackTraceDebug',
+        'scrapy.contrib.debug.StackTraceDump',
         'scrapy.contrib.response.soup.ResponseSoup',
     ]
 
diff --git a/scrapy/trunk/docs/topics/extensions.rst b/scrapy/trunk/docs/topics/extensions.rst
index 73703ce2f..1a05075d6 100644
--- a/scrapy/trunk/docs/topics/extensions.rst
+++ b/scrapy/trunk/docs/topics/extensions.rst
@@ -40,7 +40,7 @@ by a string: the full Python path to the extension's class name. For example::
         'scrapy.management.telnet.TelnetConsole',
         'scrapy.contrib.webconsole.enginestatus.EngineStatus',
         'scrapy.contrib.webconsole.stats.StatsDump',
-        'scrapy.contrib.debug.StackTraceDebug',
+        'scrapy.contrib.debug.StackTraceDump',
     ]
 
 
diff --git a/scrapy/trunk/scrapy/conf/default_settings.py b/scrapy/trunk/scrapy/conf/default_settings.py
index b6fb8897a..a5a4ce764 100644
--- a/scrapy/trunk/scrapy/conf/default_settings.py
+++ b/scrapy/trunk/scrapy/conf/default_settings.py
@@ -94,7 +94,7 @@ EXTENSIONS = [
     'scrapy.contrib.pbcluster.ClusterMasterWeb',
     'scrapy.contrib.pbcluster.ClusterCrawler',
     'scrapy.contrib.closedomain.CloseDomain',
-    'scrapy.contrib.debug.StackTraceDebug',
+    'scrapy.contrib.debug.StackTraceDump',
     'scrapy.contrib.response.soup.ResponseSoup',
 ]
 
diff --git a/scrapy/trunk/scrapy/contrib/debug.py b/scrapy/trunk/scrapy/contrib/debug.py
index 6638960a8..df86ab312 100644
--- a/scrapy/trunk/scrapy/contrib/debug.py
+++ b/scrapy/trunk/scrapy/contrib/debug.py
@@ -1,10 +1,12 @@
 """
 Extensions for debugging Scrapy 
+
+See documentation in docs/ref/extensions.rst
 """
 import signal
 import traceback
 
-class StackTraceDebug(object):
+class StackTraceDump(object):
     def __init__(self):
         try:
             signal.signal(signal.SIGUSR1, self.dump_stacktrace)
diff --git a/scrapy/trunk/scrapy/log/__init__.py b/scrapy/trunk/scrapy/log/__init__.py
index bd0a17ee1..b4c916282 100644
--- a/scrapy/trunk/scrapy/log/__init__.py
+++ b/scrapy/trunk/scrapy/log/__init__.py
@@ -1,5 +1,7 @@
 """ 
-Crawler logging functionality
+Scrapy logging facility
+
+See documentation in docs/ref/logging.rst
 """
 import sys