Welcome the Technical Support section. Help us in assisting you by providing us with a concise and descriptive elaboration of your issues. Be specific and if possible, provide us with a step-by-step instruction in replicating your problem.
Since upgrading Jomsocial, the menu item in my component list has disappeared for some reason. I have also gone into extension manager and searched for jomsocial and only the plugins and modules are listing.
It seems according to my toolbar that there is an update for my version of Jomsocial but because the component isn't listed in my extension manager I am unable to uninstall it and the link on my toolbar doesn't do anything at all.
I have checked and checked again and I can login without a problem. In the 'misc' section I have put the details for the C Panel, is this the section that you have attempted to login with?