Flickering, goes away on recreate

[Tobias]

One of the people trying the demo for Mad Skills Motocross had this to say:

Hey There, When I first started the demo, the screen was flickering like crazy on the top (the band that covers the username and other small buttons), and near the bottom. I changed went into video settings, didnt change anything, and hit ok, then the flicker ceased. No biggie, just something to keep an eye on I'm running winxp pro sp3, HD4770 video, latest drivers and dx9.0c.

So, essentially part of the screen flickers until these calls occur:

Display.releaseContext();
Display.setDisplayMode( mode );
Display.setFullscreen( fs );
Display.makeCurrent();

LWJGL version: 2.1.0
jMonkeyEngine 1.0

Any ideas?