Have a look at the directory /etc/pam.d/ and see if there's anything that might cause a delay. PolicyKit might also play a role in the delay, or thinkfinger itself, I can't say for sure.
Have a look at the directory /etc/pam.d/ and see if there's anything that might cause a delay. PolicyKit might also play a role in the delay, or thinkfinger itself, I can't say for sure.