No cache headers bug?

[محروم.كوم]

I found this in my page source:

PHP Code:

And I found here from Floris that you can control the option in AdminCP: http://www.vbulletin.com/forum/showthread.php?t=104042



Great, so I went to disable it, but it was already option for 'add no-cache http headers' was already set to no.


So... why does this appear in my page source?



What's the purpose of this feature anyway? __DEFINE_LIKE_SHARE__