pb reaiding on ps2

[oliv090]

hi,
when i burn a image file, sometimes when i put the cd in my ps2,
i can heard the cd turned and after few seconds it blocks...
So when i push X button nothing appear.
I must eject cd and re-insert the cd until it does not jam any more.
So i can press X button and the game launch himself.
Someone knows what is the problem (burn, laser???).
Thanx