A few days ago it seems that all tasks in Scheduled Tasks stopped working. They can still be run manually.

I'm running vB5.6.2PL1, and haven't done any upgrades recently. However, I did change some parameteres in AdminCP at about the time this happened, so I might be to blame. I've tried looking in AdminCP but just cannot find anywhere to restart the Cron jobs, or whatever it takes.

All help will be appreciated. It's probably just me doing something stupid, otherwise I'll file a support ticket.