This is the second time I have this problem, I don't remember how did I solve it the first time. Virtualmin main page displays that usermin and webmin need to be updated. Both went into troubles and update was failed. I went to Webmin - Usermin configuration and perform update Usermin (the up blue arrow icon) Usermin was finally updated. Webmin configuration hasn't that option so I went to command line and executed yum -y upgrade webmin instead of yum -y install webmin as displayed by the automated process from the main panel And both were done.
Another question: From the same virtualmin main page I see '156 updates to system packages are available.'
My system is a web server that is working good. I am always afraid to update when the things are okay. Do you have any recommendations? Thank you.