thanks for your feedback.

I can assure you that this is not related to the kernel extension. As 
a helper for drivers in kernel space, it's not executing, launching 
or controling applications.

Executing, launching and controlling of applications is handled 
entirely by the Remote Buddy application, which resides entirely in 
user space.

Seeing that Play is mapped to "Toggle full screen mode" in DVDpedia 
by default, and toggling fullscreen in pretty much any application 
can give you the impression of a flashing screen, this sounds more 
like a problem with DVDpedia.

Can you give me a step by step description on how to reproduce the 
issue?

Also, under which circumstances you have experienced it (i.e. which 
apps are running - and which state/mode are they in)?

Thanks in advance!

Best regards, 
Felix