Open Firmware Password Doesn't Work

I've been using O.F.P. v 1.05 on both my computers for over a year. All has been well until recently. Now when I reboot holding down the option key I either get the O.F.P. screen without the password line so I can choose any bootable disk or I get the password line, but when I enter the password nothing happens and I have to reboot normally.
Both computers running 10.4.3 with all latest updates.
What's going on?

Well, I just searched the Apple Support Knowledge Base and found this text here at http://docs.info.apple.com/article.html?artnum=106482. In the section "How to enable the Open Firmware Password" it says right in the first paragraph:
1. For Mac OS X 10.1 to 10.3.9, Download and Install the Open Firmware Password application, which you can get here. For Mac OS X 10.4 or later, you must use the updated version that can be copied from the software installation disc (located at /Applications/Utilities/ on the disc).
The link for version prior to 10.4.x leads to OFP 1.0.2, so 1.0.5 might already be the updated version that ships with Tiger. I can not check right now because I am not at home where my copy of Tiger is; maybe others can check it in the meantime.
If you not already have done so, maybe you could try to update 10.4.x to the latest version (which is 10.4.3) and get all other available patches as well, just to make sure.
Regards
Jim
AiPB 15 1,25 GHz;; iMac 17 1 GHz (flat panel)   Mac OS X (10.4.3)  
UPDATE: And I doublechecked that I am indeed running version 1.1 (1) of OFP on my installation. I am not aware of having it updated manually, so it must either have been this all along since I installed Tiger or been updated in the procress.
Message was edited by: Jim Knopf

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