There is an out of bounds error when copying image data to a buffer which
affects certain programs like digikam.
It's detailed in this bug: http://bugs.kde.org/show_bug.cgi?id=100894
A patch was supplied (and apparently it was also implemented upstream) but it
seems it hasn't found it's way into portage yet (it's not in the 1.2.0.007
version either)
You can see a patch for it here:
http://bugs.kde.org/attachment.cgi?id=10524&action=view
I've tried it and it's solved the problem for me. Could you please implement it
into portage? thanks.