Quote Originally Posted by leftystrat
... It appears to be every 15 minutes and is very definitely time-related. It bongs X amount of times on the hour ...
Another thought... Have you been setting anything up in cron? You might want to check if cron is running, and then, if it is running, check both the root and your users "crontab daily" files - see if you have an entry that is being fired off every "15" minutes...

This "thing" seriously sounds like ( no pun intended ) a chime, or alarm program, or a reminder type program... If it is being fired off in cron, it would not show up in any process output, until it is run... If it is run, and sleeps, it should show up in a process output... knotify is a standard process... You might want to go into Control Center, System Notifications, and click on the "Disable All Sounds" - and see if it is coming from something in KDE...

Hope this helps,
Ms. Cuddles