Hello,

I'm afraid I did something stupid.

My distro is Fedora 10.
I removed gstreamer through Fedora's software installer with the plan to directly reinstall it (fyi, I was trying to get my webcam working). A list of additional programs appeared, which would be removed also - unfortunately I didn't spend much time looking at it. I thought it were additional obsolete programs, which would be reinstalled with gstreamer by resolving dependencies.

So far my actions...

But after deinstalling, I rebooted my computer, and initially it went well (I saw the progress bar reaching completion), BUT the login screen didn't appear. Instead a black screen appeared, in which i could type (without any response though), and I even could use my mouse (the pointer was actually a white rectangle).

So obviously I did something terribly stupid... (again...)
Does anybody know a way to repair my linux installation?
Thank you!! (though i might seem calm and peacefull, i'm quite desperate :-) )

Can you go to a terminal?
CTRL-ALT-F1

Yes!
But with ctrl+alt+F2. I can login now. Thank you!

Do you have an idea what I have to reinstall to get everything back to normal? I guess gstreamer, but i have a feeling that that won't be enough...

Going to learn a bit about yum i think. Is there a possibility to display the latest program removals?

Seems to me a part of gnome is removed also.
Start with gstreamer, and see from there

it is
gnome and gnome-desktop-environment

Yes, I'm back on my good old desktop!

So what I did:
ctrl+alt+F2 to log in
then: yum install gstreamer.i386
and: yum -y groupinstall "GNOME Desktop Environment"

And after a reboot, the login screen appeared.
Thank you for helping me out!