Comment 79 for bug 403610

Yes! Thank you for inspiring screenshot.
Finally I see that it is really working working for me too!

Though, there are some glitches.

When you set your screen layout and then press "Apply",
a message appears to accept new layout.
If you don't press "Accept" in about 15 seconds
it reverts to previous configuration.

I think this is what was happening to me, but as my system
is not very fast and I have compositing enabled,
screen was redrawn quite slowly and I just did not see
this message properly. Plus sometimes Kwin doesn't redraw
windows correctly after changing resolution if compositing
is enabled (dodgy Intel drivers), so I saw that a message appears,
but didn't see what is written on it.

If composition is disabled changing screen resolution works faster
and dialog windows is displayed properly.

So I think that it would be quite sensible to make the delay
before Accept/Revert window disappears at least 30 seconds.

But there is workaround: you can just press Alt+A, if you sure,
that resolution is correct, but windows just redraw too slowly
or you just don't want to

Another thing is that you cannot set primary screen,
so on Intel all panels and widgets will migrate to external
screen by default and you have to do it manually:
xrandr LVDS --primary
Here is bug about that: https://bugs.kde.org/show_bug.cgi?id=241719

Yet another glitch is with 90 and 270 orientations
(useful for monitor with pivoting stand in portrait mode):
relative position is calculated incorrectly.
But if you set absolute positions for both monitors everything is fine.
But I think another bug report should be opened fo that one.

Conclusion:
no regression in KDE 4.5.0 for Intel 965GM. FIXED.
Though, cannot confirm this for ATI/NVidia at the moment -
I don't have the hardware.