Guys? Take a deep cleansing breath.
but the problem is that this problem keep coming back ! just like its a zombie or something !
can any body help me
my main guess is that a plugin cause this bug which cant be solved by deactivating...
What does your host say? Unless something changes then fixed problems remain fixed. Can you share a link to one of your impacted sites?
Did you do what was suggested above?
Have you tried:
- deactivating all plugins to see if this resolves the problem. If this works, re-activate the plugins one by one until you find the problematic plugin(s).
- switching to the Twenty Twelve theme to rule out any theme-specific problems.
- resetting the plugins folder by FTP or PhpMyAdmin. Sometimes, an apparently inactive plugin can still cause problems.
- re-uploading all files & folders - except the wp-content folder - from a fresh download of WordPress. Make sure that you delete the old copies of files & folder before uploading the new ones.
This is a self-help forum and you need to work through your problems yourself. There's no magic pill and if you do not take the steps to sort it out then we cannot help you.
If it's really urgent and you need professional help then please consider hiring someone.