I have a somewhat strange problem. I run SL6.5 (a RHEL clone) and a couple months ago updated the kernel. The kernel release notes can be found here. I updated to the 431.17.1 kernel. During boot, the boot process mostly completes, but it hangs right before the login screen appears. If I boot to the older kernel (431.11.2), everything boots fine. The 431.20.3 kernel acts just like the 431.17.1. Below is the screen when it hangs (I apologize for the quality/glare, there is no good way to take a screen cap during boot).
Note that sshd has sucessfully started at this point, so I booted into a liveCD onto one of my co-workers desktops and used ssh to connect to the computer. The connect worked fine, I was able to navigate my root file system, and even started matlab using X11 forwarding which appeared without issue.
I have tried looking at the /var/log and don't see any major errors occuring during boots. I am wondering what I can do to sort out what is causing this, and how I might fix it.