Leopard 10.5.5 blue screen

Hi All
I have a MBP running 10.5.5. Today when I booted my machine, it got stuck at the blue screen. I have:
- been able to boot into safe mode at which time I ran the disk utility application and "verified disk" (it was fine) and I "repaired disk permissions" (there were a few things listed). I tried re-booting but had the same problem, ie. blue screen.
- rebooted into safe mode and searched for the "applicationenhancer.bundle" which does not seem to exist on my machine
- reset the PRAM
Still I cannot do a regular boot (still get the blue screen). Any guidance/suggestions would be appreciated.
Thanks
Mike

If you can boot into safe mode, it implies that there is something that is interfering with the startup.
Open the Console app and look for issues during startup. You can also startup in verbose mode by holding down the cmd-v. I thought it was just the v key, but an Apple support doc indicated cmd-v.

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