Description of problem:
I have those kernels installed :
kernel.x86_64                                   2.6.27.5-117.fc10                                   installed
kernel.x86_64                                   2.6.27.8-144.fc10                                   installed
kernel.x86_64                                   2.6.27.9-159.fc10                                   installed
kernel.x86_64                                   2.6.28.1-19.fc10                                    installed

I can only boot the first one correctly.
All the others fail after the end of the boot, just when GDM is supposed to appear.
It takes some times to make plymouth disappear and to make my wallpaper appear, then I see only the mouse. 10 seconds later it freezes. (with still no GDM in view, only the wallpaper and the mouse) 

Version-Release number of selected component (if applicable):
2.6.27.8-144.fc10 and above

How reproducible:
always

Steps to Reproduce:
1. boot normaly
2. fail just before the GDM

Additional info:
I don't know exactly what information (log ?) I could give, please ask them.