Originally Posted by defa0009
Sometimes I get the Gnome login screen and sometimes I get the bash login?
Why is this happening? - that's the question to answer. The missing login prompt is just a symptom to this problem.
What is different? Why does X start automatically sometimes, but not always?
What boot manager does Cent use? Grub? Lilo?
Are you always selecting the same boot menu item? Are you passing parameters to the kernel on boot? Yada, Yada, Yada...