Magnify feature doesn't work on T40p

[onlyTP]

Hi guys,

Very informative site, I love it! learned so much...

I'm having problem recently, the Magnify feature with Fn-Space combination doesn't work any more. It used to magnify to full screen, now it just shrink the whole screen to a lower resolution in a much smaller window, not much help with my sights.

Does anyone know what causing this behavior? It used to work fine...

TIA!