On Tuesday 17 January 2012 00:16:19 Tiago Marques wrote:
> This whole discussing of changing defaults has some merit to it. I
> personally have been using "Centered" as my default due to problems
> restoring previously saved sessions with "Smart" placement turned on. Case
> in point: KPDF.
> 
> Usually, if I have one or two KDPF windows open, the system would restore
> them not as I left them (maximized) but in a quarter of the screen size in
> the top left corner. This is bad and I haven't noticed this since changing
> to "Centered". This is probably an unrelated bug but the Smart placement
> doesn't seem optimal right now, especially for people with small size
> screens. I would like to hear if users have had similar problems.
Now comes the interesting part: the windows tell KWin where to be put on 
restore. So what you describe with KPDF is most likely a bug in KPDF.

Cheers
Martin