libquicktime has media-libs/quicktime4linux in depend and quicktime4linux has !media-libs/libquicktime in depend. So when it tries to install libquicktime it installs quicktime4linux as well, but then I'll do an emerge -uDp world I'll get [blocks B ] media-libs/libquicktime (from pkg media-libs/quicktime4linux-1.5.5-r1) one is requiring the other and one is blocking the other. I noticed this before but emerge didn't say anything was blocked until I updated portage to 2.0.48-r5.
now good