diff --git a/check_cups.py b/check_cups.py
index e8833fe..b331996 100755
--- a/check_cups.py
+++ b/check_cups.py
@@ -23,7 +23,7 @@
 # along with this file. If not, see <http://www.gnu.org/licenses/>. #
 #####################################################################
 
-import datetime
+import os
 import re
 import subprocess
 import sys
@@ -59,27 +59,26 @@ plugin.add_cmdlineoption('-J', '--check-jobs', 'check_jobs', 'check job queue',
 plugin.add_cmdlineoption('-w', '', 'warn', 'warning thresold for old jobs (seconds)', default='3600')
 plugin.add_cmdlineoption('-c', '', 'crit', 'warning thresold for old jobs (seconds)', default='86400')
 
-plugin.add_cmdlineoption('', '--mymontools-testmode', 'mymontools_testmode', None, default=False, action='store_true')
+plugin.add_cmdlineoption('', '--mymonplugins-testmode', 'mymonplugins_testmode', None, default=False, action='store_true')
 
 plugin.parse_cmdlineoptions()
 
 ##############################################################################
 ##### Testmode
 
-if plugin.options.mymontools_testmode:
+if plugin.options.mymonplugins_testmode:
 	# Because we need tzlocal from dateutil.tz
-	mymontools_testmode = {}
+	mymonplugins_testmode = {}
 
-	mymontools_testmode['lpstat -a'] = '''Printer_One accepting requests since 1970-01-01T00:00:00 CEST
-Printer_Two accepting requests since 2016-01-01T00:00:00 CEST
-Printer_Three accepting requests since 2116-01-01T00:00:00 CEST
-Printer_Rejecting not accepting requests since 2016-02-01T00:00:00 CEST -
+	mymonplugins_testmode['lpstat -a'] = '''Printer_One accepting requests since Thu 16 Jun 2016 02:57:36 PM CEST
+Printer_Two accepting requests since Thu 16 Jun 2016 02:57:36 PM CEST
+Printer_Three accepting requests since Thu 16 Jun 2016 02:57:36 PM CEST
+Printer_Rejecting not accepting requests since Thu 16 Jun 2016 02:57:36 PM CEST -
 Rejecting Jobs'''.split('\n')
 
-	from dateutil.tz import tzlocal
-	mymontools_testmode['lpstat -o'] = '''Printer_One-1234 username 12345 1970-01-01T00:00:00 CEST
-Printer_Two-1234 username 12345 %s''' % datetime.datetime.now(tzlocal()).strftime('%FT%T %Z')
-	mymontools_testmode['lpstat -o'] = mymontools_testmode['lpstat -o'].split('\n')
+	mymonplugins_testmode['lpstat -o'] = '''Printer_One-1234 username 12345 Thu 01 Jan 1970 01:07:19 AM CET
+Printer_Two-1234 username 12345 %s''' % time.strftime('%a %d %b %Y %I:%M:%S %p %Z', time.localtime())
+	mymonplugins_testmode['lpstat -o'] = mymonplugins_testmode['lpstat -o'].split('\n')
 
 ##############################################################################
 
@@ -107,30 +106,27 @@ def check_printer_queue(output_printer_queue):
 ##############################################################################
 
 def check_job_queue(output_job_queue):
-	try:
-		import dateutil.parser
-		from dateutil.tz import tzlocal
-	except ImportError:
-		print('Python module "dateutil" required, please install!')
-		sys.exit(3)
-
-	m = re.compile('(\d{4}\D\d{2}\D\d{2}\D\d{2}\D\d{2}\D\d{2}\D\w{3,5})')
+	m = re.compile('(\w{3} \d\d \w{3} \d{4} \d\d:\d\d:\d\d (AM|PM) \w{3,5})')
 	nowsecs = long( time.time() ) 
 
 	jobs_warn = []
 	jobs_crit = []
 	for line in output_job_queue:
+		plugin.verbose(3, line)
 		f = m.search(line)
 		if not f:
+			plugin.verbose(1, 'No timestamp found in "%s"' % line)
 			continue
-		tstamp = dateutil.parser.parse(f.group(0))
+		tstamp = time.strptime(f.group(1),  '%a %d %b %Y %I:%M:%S %p %Z')
 
-		tsecs = long( tstamp.strftime('%s') )
-		rc = plugin.value_wc_to_returncode((nowsecs-tsecs), plugin.options.warn, plugin.options.crit)
+		tsecs = long( time.mktime(tstamp) )
+		age = nowsecs - tsecs
+		rc = plugin.value_wc_to_returncode(age, plugin.options.warn, plugin.options.crit)
 		if rc == 1:
 			jobs_warn.append(line)
 		elif rc == 2:
 			jobs_crit.append(line)
+		plugin.verbose(1, 'Job is %s seconds old, state/returncode: %s' % (age, rc))
 
 	jobs = len(output_job_queue)
 	jobs_old = len(jobs_warn) + len(jobs_crit)
@@ -147,11 +143,14 @@ def check_job_queue(output_job_queue):
 ##############################################################################
 
 def call_cmd(cmdline):
-	if plugin.options.mymontools_testmode:
-		return (mymontools_testmode.get(' '.join(cmdline)), '', 0)
+	if plugin.options.mymonplugins_testmode:
+		return (mymonplugins_testmode.get(' '.join(cmdline)), '', 0)
+
+	myenv = dict(os.environ)
+	myenv['LC_ALL'] = 'C'
 
 	try:
-		cmd = subprocess.Popen(cmdline, stdout=subprocess.PIPE)
+		cmd = subprocess.Popen(cmdline, stdout=subprocess.PIPE, env=myenv)
 		(sout, serr) = cmd.communicate()
 		if sout:
 			sout = sout.lstrip().rstrip().split('\n')