> Have you `emerge -e world` yet? > > Stroller. I have that going now. I offloaded OpenOffice to shorten the duration of the rebuild, and I don't have KDE or Gnome - just fluxbox. So it should finish by sometime tomorrow, probably. There are 604 packages total. Instead of trying to rebuild X-related stuff in parts, I should have just done that from the beginning.
Dale - thanks for the advices also. That's the route I thought about taking. Doing 'emerge -e world' first seems like a reasonable thing to do. It could be that whatever is causing this cannot be resolved by a simple rebuild. Whatever went into the lib-xcb upgrade probably is either incompatible with the Mathematica frontend or has a bug that's being exploited in this situation. Keeping my fingers crossed for the rebuild for now. :-) -Denis