Weird "flickering" on Samsung Corby

Hi all,

I’m rewriting my game in cocos2d-x 1.13 beta and everything works fine untill I try to run it on a really bad phone Samsung Corby.
(btw game is made in 720x480, don’t know if it matters)
This is what happens http://www.youtube.com/watch?v=Nd_LchBJdgU , all other phones that I’ve tested worked very well.
I also tried using gldepthtest and the 2dprojection thing like on the Iphone 4s because it seems similar but without succes.
Any suggestions?

Thanks in advance,

Friendly regards,

Seppe