very strange login problem - won't accept known good password
I have brought an old powerbook G4 back to life, mostly to run old apps that dont run on the current system.
I did a clean install of Tiger (10.4). It worked fine, but did nto support some security protocols for secure web pages and email access, so i decided to upgrade to 10.5 (Leopard). It did so successfully. so i thought.
Got to login screen. Correct machine network name. Correct user ID (me). Put in password. Long delay, screen "shakes head". This occured many times. Caps lock is not on. Password is correct.
So, you say" it probably wasnt". OK, i put in the original 10.5 DVD and rest the password. Tried again. No go, same problem.
Called Apple. They have no clue. said re-install 10.5, something in login corrupted. So i did. Booted up - c'est le meme chose.
Can anyone think of what's up? and in fact, since it was set ( in tiger) automatically boot, why its even asking for login credentials? I suspect the two may be linked.
TIA,
Grant