I was trying to install Fedora 12 on my system. I have Dell vostro 1015 with 2 GB RAM. The installation hangs after running for some time. It does not hang at one particular place. I tried 3 or 4 times and every time it hanged at different places.
After going through their bug list, I found a bug related to my problem. To see the bug information, go to bug.
They have given a work around which did not work for me but it did work for some people.