I've set three alert reminders today for Coda Caves digging, and none of them have appeared under alerts on my sidebar.

I've had this problem too. I feel kinda lucky that I caught them

I don't think ANY alerts are working, I have alerts all over, didn't even received one, not even from mallarchy pond, usually annoyingly alerting, not random, no crypts, nothing...

Same... I receive nothing either... Not even the scratchcard

I'm getting them from Random, but that's it. None of the other ones are working.

Not getting any either.

I use the coda caves widget on my sidebar and that still works - has worked all day even when other stuff wasn't working. So there is a workaround for that at least.

To add the widget. Personal->Customize Sidebar, find the coda cave widget and click (add).

Thanks, totally did that, great idea, now at least it's in my face :D