I was recently updating my gentoo system when I came across a puzzling issue. I was getting updates for QT 4.6.x as well as 4.7.x and there were conflicts all over the place. At least 12 were listed when attempting to emerge world.
I removed all QT 4.7.x packages rather foolishly to see if the conflicts would clear up, which they didn't. After looking closely at some of the packages, it seems that K3b was bringing in all these older qt updates. I removed it from my system, but the problem still persisted. That's why I'm writing this down. I had to explicitly mask the package in order for the problem to go away.
echo "app-cdr/k3b" >> /etc/portage/package.mask
My laptop's already not allowing me to use my cdrom very well, perhaps it's dying. I can't burn or play dvd's on it. Keeps giving me HAL errors, regardless of whether it's running. Other burners don't see the drive either.
Anyway, I'll be heading up for the Global Game Jam soon. Cheers, y'all.