Seems kst-2.0_beta5 was released and uploaded to sourceforge, rather than to the kde mirrors. Release notification: http://permalink.gmane.org/gmane.comp.kde.kst/14075 Files: http://sourceforge.net/projects/kst/files/
Bumped, thanks! +*kst-2.0.0_beta5 (05 Jun 2010) + + 05 Jun 2010; Dominik Kapusta <ayoy@gentoo.org> +kst-2.0.0_beta5.ebuild: + Version bump, thanks to Samuli for reporting (bug #321835). +