I just tried "upgrading" from 6.0 to 6.1. EVERY SINGLE PACKAGE THAT I HAD UPGRADED UNDER 6.0 GOT DOWNGRADED TO WHATEVER 6.1 PROVDES. October GNOME and E 0.16? Gone, downgraded to 0.53 and 0.15. My Fortified version of Netscape 4.7? Nope, back to 4.61. Also my i686 2.2.12 kernel, xscreensaver, ee, gftp (well, 2.0.6pre1 was broken anyway), gtk+, xmms... An upgrade to 6.1 should be just that: an UPGRADE. What I got was not an upgrade, but a replacement of all packages that were not already installed. That is called "an install on top of an existing install", not an upgrade. I couldn't do that with rpm on the command line if I tried, yet the "install" does it without blinking.
This issue has been forwarded to a developer for further action.
*** Bug 6751 has been marked as a duplicate of this bug. ***
*** Bug 6539 has been marked as a duplicate of this bug. ***
Fixed in the next installer release.