With exception of root, the following is true:
1. None of those accounts have passwords.
2. You can not log into them.
To confirm this you would look in the /etc/shadow file. The password field in your shadow file should show that they have no password (look at /etc/shadow, the second field, separated by :, should be *). Most of these accounts will also have no shell (their shell will be /bin/false and home directory will be /dev/null). This means that even if someone were to some how log in as them, they wouldn't have a shell.
I installed Linux SuSe with some options, by default it installed about ten admin account like daemon, lp, root, named, man, pop, etc..
Somebody can tellme the passwords??
What happend if a change somo of them for security????