#536 smplayer blinks in fullscreen mode

[J. Neto]

1 - Open any video
2 - Toggle to fullscreen mode
3 - Put mouse on the bottom of the screen < Nothing happen, I think the length bar would appear.
4 - Move the mouse to the up

OS: fedora 17 32bits
kernel: 3.6.3-1.fc17.i686.PAE
smplayer: 0.8.1