Yikes! So sorry about this everyone... but thanks so much for coming
here to report it. We're now in frantic-chase-down-this-bug mode here
at the Googleplex, and I hope to have more info for you soon.

For now, we're not entirely sure of this, but it's possible that
changing your homepage theme might cause the problem. SO, if you still
have your homepage intact, please avoid changing your theme until
further notice.

The big question I know you'll all want answered is whether you'll get
your homepage back once we sort things out... and the really honest
answer is that I hope so, but I just don't know yet.

Thanks for all your patience and helpful details. I will update this
thread as soon as I can.
- Jaime

p.s. no need to report this via the contact form that Fun n Frolic Ltd
linked to -- we are definitely aware of the problem, and I'll post to
this thread if there's more info I have or need from all of you.