You need to run this as root:
[server][root][~]# for user in $(cut -f1 -d: /etc/passwd); do crontab -u $user -l; done
that will loop over each user in /etc/passwd listing out their crontab. The crontabs are owned by the respective users so you will not be able to see another user’s crontab without doing this as root.
Just in case you are using OpenOffice.org (OOo) and are looking for ways to speed it up, here is a tip that makes it open very quickly.
Tools -> Options -> Memory
Under Graphics cache:
Use for OpenOffice.org increase to 64MB “Memory per object” increase to 8MB
then under Java -> Java Options
Unselect Use a Java runtime environment
Close OOo and reopen it. See, how fast she goes now?