Oh, I was reloading....reloading like crazy, and dumping my cache. I'd get new basic tasks (without subtasks) immediately in the widget, but no complicated ones.
At any rate, it seems to have resolved itself overnight so I can see all my tasks & subtasks. Also seems to have self-corrected in Google Calendar. So, hurray!
I've just upgraded to Pro and now I can't see any of my subtasks (or for that matter, the "primary" task that heads them) in the iGoogle widget...is this a limitation of the widget or am I missing something?
if I click, say, on "Folders" it will show 7 tasks in a folder, but when I click on that folder, the widget thinks it's empty. The tasks sync fine in the Appigo iphone app (they aren't subtasks, but at least I can see them), and a single task (without subtasks) shows up immediately in the widget. I've tried changing the priority, etc..no luck.