diff --git a/gluon/import_all.py b/gluon/import_all.py
index f350f61d..a8cbffc6 100644
--- a/gluon/import_all.py
+++ b/gluon/import_all.py
@@ -79,15 +79,14 @@ alert_dependency = ['hashlib', 'uuid']
 # python version.
 #
 # List of modules deprecated in Python 2.6 or 2.7 that are in the above set
-py26_deprecated = ['mhlib', 'multifile', 'mimify', 'sets', 'MimeWriter']
-py27_deprecated = []  # ['optparse'] but we need it for now
+py27_deprecated = ['mhlib', 'multifile', 'mimify', 'sets', 'MimeWriter']  # And ['optparse'] but we need it for now
 
 if python_version >= '2.6':
     base_modules += ['json', 'multiprocessing']
     base_modules = list(set(base_modules).difference(set(py26_deprecated)))
 
 if python_version >= '2.7':
-    base_modules += ['argparse']
+    base_modules += ['argparse', 'json', 'multiprocessing']
     base_modules = list(set(base_modules).difference(set(py27_deprecated)))
 
 # Now iterate in the base_modules, trying to do the import
diff --git a/gluon/restricted.py b/gluon/restricted.py
index 7a592d84..e7e3f9cf 100644
--- a/gluon/restricted.py
+++ b/gluon/restricted.py
@@ -236,6 +236,7 @@ def restricted(code, environment=None, layer='Unknown'):
         # XXX Show exception in Wing IDE if running in debugger
         if __debug__ and 'WINGDB_ACTIVE' in os.environ:
             sys.excepthook(etype, evalue, tb)
+        del tb
         output = "%s %s" % (etype, evalue)
         raise RestrictedError(layer, code, output, environment)
 
@@ -261,6 +262,7 @@ def snapshot(info=None, context=5, code=None, environment=None):
 
     # start to process frames
     records = inspect.getinnerframes(etb, context)
+    del etb # Prevent circular references that would cause memory leaks
     s['frames'] = []
     for frame, file, lnum, func, lines, index in records:
         file = file and os.path.abspath(file) or '?'
@@ -319,10 +321,8 @@ def snapshot(info=None, context=5, code=None, environment=None):
     s['exception'] = {}
     if isinstance(evalue, BaseException):
         for name in dir(evalue):
-            # prevent py26 DeprecatedWarning:
-            if name != 'message' or sys.version_info < (2.6):
-                value = pydoc.text.repr(getattr(evalue, name))
-                s['exception'][name] = value
+            value = pydoc.text.repr(getattr(evalue, name))
+            s['exception'][name] = value
 
     # add all local values (of last frame) to the snapshot
     s['locals'] = {}
diff --git a/gluon/tests/test_sqlhtml.py b/gluon/tests/test_sqlhtml.py
index a7d2a738..19a60dfb 100644
--- a/gluon/tests/test_sqlhtml.py
+++ b/gluon/tests/test_sqlhtml.py
@@ -6,10 +6,7 @@
 """
 import os
 import sys
-if sys.version < "2.7":
-    import unittest2 as unittest
-else:
-    import unittest
+import unittest
 
 from fix_path import fix_sys_path
 
diff --git a/gluon/tests/test_tools.py b/gluon/tests/test_tools.py
index cc45154b..547a0c95 100644
--- a/gluon/tests/test_tools.py
+++ b/gluon/tests/test_tools.py
@@ -8,10 +8,7 @@ import os
 import sys
 import smtplib
 import datetime
-if sys.version < "2.7":
-    import unittest2 as unittest
-else:
-    import unittest
+import unittest
 
 from fix_path import fix_sys_path
 
diff --git a/gluon/tests/test_web.py b/gluon/tests/test_web.py
index a75ae574..69589783 100644
--- a/gluon/tests/test_web.py
+++ b/gluon/tests/test_web.py
@@ -5,10 +5,7 @@
 """
 import sys
 import os
-if sys.version_info < (2, 7):
-    import unittest2 as unittest
-else:
-    import unittest
+import unittest
 import subprocess
 import time
 import signal
@@ -48,27 +45,10 @@ def startwebserver():
     print ''
 
 
-def terminate_process(pid):
-    # Taken from http://stackoverflow.com/questions/1064335/in-python-2-5-how-do-i-kill-a-subprocess
-    # all this **blah** is because we are stuck with Python 2.5 and \
-    # we cannot use Popen.terminate()
-    if sys.platform.startswith('win'):
-        import ctypes
-        PROCESS_TERMINATE = 1
-        handle = ctypes.windll.kernel32.OpenProcess(PROCESS_TERMINATE, False, pid)
-        ctypes.windll.kernel32.TerminateProcess(handle, -1)
-        ctypes.windll.kernel32.CloseHandle(handle)
-    else:
-        os.kill(pid, signal.SIGKILL)
-
-
 def stopwebserver():
     global webserverprocess
     print 'Killing webserver'
-    if sys.version_info < (2, 6):
-        terminate_process(webserverprocess.pid)
-    else:
-        webserverprocess.terminate()
+    webserverprocess.terminate()
 
 
 class LiveTest(unittest.TestCase):
diff --git a/gluon/widget.py b/gluon/widget.py
index 5fe0210a..4db9e208 100644
--- a/gluon/widget.py
+++ b/gluon/widget.py
@@ -41,8 +41,8 @@ ProgramInfo = '''%s
                  %s
                  %s''' % (ProgramName, ProgramAuthor, ProgramVersion)
 
-if not sys.version[:3] in ['2.6', '2.7']:
-    msg = 'Warning: web2py requires Python 2.6 or 2.7 but you are running:\n%s'
+if not sys.version[:3] in ['2.7']:
+    msg = 'Warning: web2py requires Python 2.7 but you are running:\n%s'
     msg = msg % sys.version
     sys.stderr.write(msg)
 
@@ -57,10 +57,7 @@ def run_system_tests(options):
     major_version = sys.version_info[0]
     minor_version = sys.version_info[1]
     if major_version == 2:
-        if minor_version in (6,):
-            sys.stderr.write('Python 2.6\n')
-            ret = subprocess.call(['unit2', '-v', 'gluon.tests'])
-        elif minor_version in (7,):
+        if minor_version in (7,):
             call_args = [sys.executable, '-m', 'unittest', '-v', 'gluon.tests']
             if options.with_coverage:
                 try: