Since a while I noticed my mobile website (provided by the plug-in WPtouch), became invisible. It was a hard time finding out what was the problem, but I traced it down and the problem is the Jetpack statistics. When you open up the site (my URL is http://www.estrellaweb.nl), first you see a flash of the site, then comes a blank page with a tiny smiley in the upper left corner.
When I deactivate the Jetpack statistics module, the mobile site loads normally. Because it's a conflict between two plug-ins, I'm not sure the fault is by Jetpack or by WPtouch, but after hours of searching and craving through PHP code, I just decided to ask the pro's!
By the way: I use the last version of Wordpress and both plugins.