wordpress headers already sent problem

I am getting reports that some users are getting an issue when trying to access a client's homepage.  I cannot reproduce the error on my PC, but they have sent me screen shots.

i have attached the screen shot below.escreems sjpt errpr
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axessJoshAsked:
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axessJoshAuthor Commented:
It actually ended up being a much larger issue of malware.  I ended up having to contract a company to clean all of our Wordpress sites on our hosted server.
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Jason C. LevineNo oneCommented:
pluggable.php is the WP core functions which can be overridden by a plugin.  Does that site have plugins installed which would be immediately active for some users and not others?
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axessJoshAuthor Commented:
the only plugin that i think is immediately active on the homepage is easing slider.  I am going to put in a question to the tech support there because i have that on 2 sites that have provided similar issues.

the URL in question is www.cornerstoneshiloh.org
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Jason C. LevineNo oneCommented:
Try disabling the slider (replace with a static image) and see if the messages stop?
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axessJoshAuthor Commented:
yeah, anticipated that and tried i with no luck.  

Worst part about it is that i am not duplicating the error on my end so it makes it very difficult to troubleshoot.
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Jason C. LevineNo oneCommented:
Hmm.

It's possible, albeit unlikely, that a firewall or proxy is in play and causing duplicate requests to be made of the WordPress site.  This could result in a "headers already sent" for those users and not others.  Good luck proving it, though.
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axessJoshAuthor Commented:
Doesn't seem to be confined to a specific network at all.  Any ideas why it would show fine for some and not all?
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axessJoshAuthor Commented:
none of the other comments led to the answer.  We found the problem to be a much bigger problem than originally anticipated.
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