I am on a multisite network. Recently my frontpage admin bar dissappeared but continued to show at backend. I disabled all the plugins, changed theme to twenty ten and twenty twelve also, but no success. But it starts showing when i change name of plugins folder to something else, but it doesn't when i network deactivate all plugins without changing name of plugins folder. I think network disabling all and/or changing plugins folder name is same thing so it should work by both ways. But admin bar only shows hen i change plugins folder name to something else, but not by disabling all plugins network wide. Please help ASAP.