Question : What is best practice for server 2003 rebooting (how often) in a non 24/7 shop to prevent random windows errors?

At my previous job, we would reboot our DCs once a month.  After 45 days, sometimes our DCs or others would have strange errors.  At my new job, servers go a lot longer but there is plenty of time for them to be rebooted.  

Answer : What is best practice for server 2003 rebooting (how often) in a non 24/7 shop to prevent random windows errors?

I reboot all of our web-hosting servers once a week.  I guess I'm paranoid about this, I've been around since NT 3.5.  Maybe it's just a habit.  I do know that after 30 days on clients servers, I start noticing instabilities.

It all really comes down to memory, processor and users.  If you hava a lot of users and a slow processor or low amounts of memory, you will need to reboot more often.

I use the command "c:\windows\system32\shutdown.exe /r /t 10 /d p:1:1" in windows scheduler.  I never have to think about it.  I use similar commands to defrag hard drives on a schedule.