If I understand you correctly you wonder about the negative value? This happens to me from time to time as well, especially with the Network Usage. It's not related to ESXi 5 (the same happened already to ESXi 4.x) by the way. I've set a retry_check_interval to at least 3 mins for checks related to <a href="http://check_esx3.pl">check_esx3.pl</a>. At the second check or at least a minute later the result is correct. <div class="gmail_quote"> On Wed, Dec 7, 2011 at 8:31 AM, Mies, Christian <<a href="mailto:Christian.Mies@it-novum.com">Christian.Mies@it-novum.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> <div link="blue" vlink="purple" lang="DE"><div>Hi List, the check_esx3 Plugin send some interesting Output: <a href="http://CHECK_ESX3.PL" target="_blank">CHECK_ESX3.PL</a> CRITICAL - cpu usage=-0.01 % This Service Output is shown if the ESXi Server has nothing to do. Any Ideas for that? RegardsChristian </div> it-novum GmbH i.A. Christian Mies Senior Consultant Tel: <a href="tel:%2B49%20%28661%29%20103-874" value="+49661103874" target="_blank">+49 (661) 103-874</a> Fax: <a href="tel:%2B49%20%28661%29%20103-17874" value="+4966110317874" target="_blank">+49 (661) 103-17874</a> <a href="http://Christian.Mies@it-novum.com" target="_blank">Christian.Mies@it-novum.com</a> <img src="" style="width:236px;min-height:81px" alt="ITNLogo"> it-novum GmbH • Edelzeller Straße 44 • 36043 Fulda • <a href="http://www.it-novum.com" target="_blank">http://www.it-novum.com</a> Handelsregister Amtsgericht Fulda, HRB 1934 • Geschäftsführer: Michael Kienle • Sitz der Gesellschaft: Fulda Der Inhalt dieser E-Mail ist vertraulich. Wenn Sie nicht der eigentliche Empfänger sein sollten, informieren Sie bitte sofort den Absender oder vernichten umgehend diese Mail. Jegliche unerlaubte Vervielfältigung oder Weiterleitung dieser Mail ist strengstens verboten. This e-mail may contain confidential and/or priviledged information. If you are not the intended recepient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorised copying, disclosure or distribution of material in this e-mail is strictly forbidden. </div> ------------------------------------------------------------------------------ Cloud Services Checklist: Pricing and Packaging Optimization This white paper is intended to serve as a reference, checklist and point of discussion for anyone considering optimizing the pricing and packaging model of a cloud services business. Read Now! <a href="http://www.accelacomm.com/jaw/sfnl/114/51491232/" target="_blank">http://www.accelacomm.com/jaw/sfnl/114/51491232/</a> _______________________________________________ Nagios-users mailing list <a href="mailto:Nagios-users@lists.sourceforge.net">Nagios-users@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/nagios-users" target="_blank">https://lists.sourceforge.net/lists/listinfo/nagios-users</a> ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null </blockquote></div>