Upgrading Fedora

Check the Fedora 10 Installation Guide and Fedora 10 Release Notes
fedora-release packages can be found at ftp://download.fedora.redhat.com/pub/fedora/linux/releases/10/Fedora/i386/os/Packages/fedora-release-10-1.noarch.rpm
GDM starts on tty1 by default, not tty7.
anaconda by default now refers to encrypted devices by UUID, not by device name, to better handle device name changes. An encrypted device using partition /dev/sda1 with UUID 12345678-1234-1234-1234-123456789012 would now be called /dev/mapper/luks-12345678-1234-1234-1234-123456789012 instead of /dev/mapper/luks-sda1. You may wish to make the same changes on your system on upgrade; if you do, make sure to run mkinitrd afterwards.
If you use non-root encrypted devices, you will need to re-run mkinitrd for any older kernels that you want to still boot on the system.
It's been reported that there are problems with Pidgin i.e.:
- pidgin-2.5.2-2.fc9.i386 from installed has depsolving problems - Error: Missing Dependency: libedataserver-1.2.so.9 is needed by package pidgin-2.5.2-2.fc9.i386 (installed)
- the fix was to remove Pidgin

Check the Installer section in Release Notes)
After "the incident" you should use updated fedora-release packages from rpm -Uvh ftp://download.fedora.redhat.com/pub/fedora/linux/updates/9/i386.newkey/fedora-release-*.noarch.rpm
If you are running as a xen Host (Dom0) you should not upgrade to Fedora 9. [1]
Upgrading the thunderbird package will fail . The current workaround is yum remove thunderbird; yum install thunderbird>.
If you are upgrading to Fedora 9 and use emacs, you must upgrade to the latest version of emacs for your prior release to ensure a clean upgrade. Fedora 8 users must have emacs-22.1-10.fc8 or later, while Fedora 7 users must have emacs-22.1-7.fc7. Bug report here .
Due to the switch from sysvinit to Upstart , it is recommended that users who do an upgrade on a live filesystem to Fedora 9 reboot soon afterwards. If you do not reboot, you may want to take careful note of any '/etc/inittab.rpmsave' or '/etc/inittab.rpmnew' files. When rebooting after an upgrade then be aware that sysvinit that was used to start the system can't be used to shut it down.
You may find that after upgrading, you can no longer log in to GNOME. If this is the case, use ctrl-alt-F1 to access command prompt, then check the tail of .xsession-errors. If you see a comment like "(named color or font does not exist)", then you may be able to fix this using http://matthew.peach.net.nz/2008/05/18/how-to-fix-badname-named-color-or-font-does-not-exist-error/.