As for the log file, the last entry was over a week ago, and it showed 27.5K lines of GetModeLine entries.
You X log should have start up messages, if it doesn't have that it's not getting anywhere towards starting.
Try just typing X at the command line and see what it returns. That should try to start X Windows without going through the normal startup routines. You will probably have to be logged in as root to do that.
Jay