[CentOS] Certain scripts "hang" the terminal on logout

I have an init script that after running, causes my terminal not to
log out cleanly.  Here's what i mean:

# /etc/init.d/script restart  << this runs fine, returns my shell prompt
# exit  <<  When I enter this command, my shell window just stays
"stuck" and actually won't close down.

Anyone know why this happens?