Apple released a security update yesterday (10 June) which I installed on my
G3 PowerBook 400, OS 10.2.6.

Secure was right - the computer wouldn't let me log-on. I'd key in my
password (as you do) and press log-in (as you do), and the screen would
shimmy. I tried repairing permissions by using the OS 10.2 CD-Rom as a
start-up disc, but that didn't work. I also tried resetting the password by
using the OS 10.2 CD-Rom but that also didn't work.

Apple technical advice was that I needed to press return or enter and not
the log-on button, after keying in the password. Apple says that the problem
is becoming more common and that it is trying to find a solution.

Regards,

Michael.