A while ago, I had Xscreensaver installed. Whenever I left my computer on, it would crash after a while - the screensaver would be frozen and e24 would have a guru meditation. (And most of the time in this case even F1 or the left mouse button wouldn't work!)
I disabled Xscreensaver because I was sick of watching a video and getting interrupted (and there's no longer a presentation mode) .. the guru meditations stopped!
Anyone else have this issue? If you need me to test further, just tell me.
(Nowadays I still get guru meditations about once or twice per week...but not nearly as much as I used to.)