Fedora Core 15 - Install - Continued

I have been experiencing a number of stability issues with FC15.  Mostly to do with it not booting cleanly or firefox crashing frequently.  But also with the most recent kernel updates the machine came up with a garbled screen.  Today I have had a chance to have a closer look at it and work out what is wrong.

Firstly I noticed I am getting a number of errors from the nouveau drivers for the nvidia card I have so I decided to load kmod-nvidia from the rpmfusion repository.

I installed this, now hardware acceleration is functioning correctly and I am seeing the new gnome interface in its full glory.  Proceeded to read some online documentation about this and found firefox is now crashing with increased frequency.

Had a look and /var/log/messages and each time it was crashing it was logging a message :

 dbus-daemon: [system] Activation via systemd failed for unit 'dbus-org.freedesktop.NetworkManager.service': Unit dbus-org.freedesktop.NetworkManager.service failed to load: No such file or directory. See system logs and 'systemctl status' for details.

Given that I had previously attempted to disable network manager this was a bit of a puzzle to me.  After a bit of playing about with systemctl I decided to remove Network Manager with yum erase.

It appear that now firefox is much more stable.

To get the shutdown command back in FC15 I installed
gnome-shell-extensions-alternative-status-menu

And to make a few more tweaks to the interface I installed
gnome-tweak-tool

Hopefully this will give me a more stable system.