Comment 52 for bug 291467

These errors aren't linked with this bug. You might create an other bug about this, or search there is already one about this.

@Botond Szász,
What happened it you revert the change in the laucher ? It works again ? I'm not sure that the changes in the lauchers are responsible for your black screen. It may be an other bug. You can look the logs of xession, xorg, dmesg to understand what happened.

@cueball,
You might not see the difference since the performance of your hard disk are limitative. You can try to logout/login again with and without the changes to see the difference (since the files are loaded into memory).
Gnome startup is still very slow because it need to load a large amount of files from disk.

I attach a script that automaticaly do the change in the lauchers (should be use with superuser privileges).