Performed clean install from stage-3 athlon-xp ISO image. On step 14, I performed 'emerge kde'. When emerge tried to unpack the x11-base/xfree-4.2.1-r2 package it failed with an error message stating that the unzip command could not be found. There is one file in that package (savage-1.1.27t.zip) that requires unzip in order to unpack the file. So this package should list 'unzip' as one of it's dependencies. After doing 'emerge unzip', the 'emerge kde' continued successfully.
Bleh, missed that when I updated the driver, sorry.
*** Bug 15862 has been marked as a duplicate of this bug. ***
*** Bug 15938 has been marked as a duplicate of this bug. ***