space between widgets in qgridlayout

I cannot get rid of space between Widget in (1,1) and layouts in (2,1) and (1,2) in QGridLayout().
Screenshoot: http://alan.umcs.lublin.pl/~mroman/S...35.00%20PM.png
Source: http://alan.umcs.lublin.pl/~mroman/qtlayout.zip
I suppose this is a bug in qt. I am running mac 10.6 qt 4.6.0.

If you comment:
trackScaleLayout->addWidget(sppSlider,0);
and
channelsScaleLayout->addWidget(trackHeightSlider,0);
then there is no space between the QTextEdit and rear layouts. This is what I want.

It actually looks better with this space on kde, but not on mac.

I would be grateful, if you take a look at it.

for me it looks like slider width is greater than scroll bar width (height in horizontal ones). Check if setMaximumWidth(16) for both , slider and scrollbar, would reduce the spacing (16 is pretty small so then you adjust this value to your needs, but check if it works)

Thanks for your suggestion. Unfortunatelly it doesn't work. QSliders get closer, but Scrolls don't. On kde it's sufficient to set AlignLeft/Top, but it doesn't seem to work on mac.
I have tried to 'wrap' these layouts in qwidgets, but it looks the same.