Can confirm that (much less collisons with 2005.0), but as there exist some persistant collisions (nvidia-kernel, alsa-driver, some perl modules, etc.) So i've put these in package.features/package.env file (from Portage-Toys tools) to disable "collision-protect" just for them. Also thinking about again begin using "maketest" and do the same for failing packages, but not sure as there were quite a bit of packages that didn't pass the "tests".
If you do decide to start using the test feature, i've been using bug #73031 is a tracker for system packages (that is, packages included in 'emerge system', not packages in category sys-...). For world packages, you might get a thanks or you might get cussed at and your bug closed as invalid, depending on the maintainer. Best to include patches. ;P
-- gentoo-dev@gentoo.org mailing list