I had this problem. As first aid I deleted the Quick Cache plugin by going into Cpanel File manage. I just deleted the directory. To fix the problem completely, the host manager shifted my site to a server that has PHP 5.3.
Yep, sure enough, if you turn off “WP Content Copy Protection”, the problemm of your theme blinking in Appearance Theme Customise will stop.
Sorry to be a pest, but in the end I solved this issue. Yes, you can stop your audence from printing content.
In your style.css file place this code.
/* Print Style Sheet */
@media print {
body { background:white; color:black; margin:0 }
#header { display:block }
#content { display:block }
#comments { display:block }
#sidebar { display:block }
#footer { display:block }
}
This is just one way to do it.
