[shinji]

I was sleeping and my Mac made a sound like "do do do do..do do do do...DOOO" 6-7 times, one right after the other.

Anyone know what sound is and what it means? Only apps I had running overnight were smultron and adium.

Tried to look in the console but wasn't really sure where to look.

[Big Mac]

Some app played alert messages for some reason. I'd assume Adium.

[shinji]

Alright that's fine...I just wanted to make sure it wasn't like, an ipfw alert or something.

[Big Mac]

Nope, I don't think the built-in firewall warns the user of much of anything.

[rehoot]

It's a poltergeist!!! GET OUT OF THE HOUSE NOW!!!

From a safe location, check your iCalendar for anything scheduled to issue an alarm. Also check if there are any fishy applications in your startup. This is in System Preferences/Users and click the StartupItems tab and look for somthing that doesn't look right. You can unclick an application to stop loading it automatically.

There might also be someting scheduled with cron. From Terminal (in the Applications/Utilities folder) enter the command cron -l (that is a lower case L) to display a table of scheduled events. If the line starts with a #, then it is a comment. Long lines will word-wrap. You can read about this by typing man crontab or man cron. If you see a line that begins with several numbers, those numbers represent minute, hour, day, month, weekday. Here is some more info: http://www.uwsg.iu.edu/usail/automation/cron.html