I'm trying Pierre's Google Maps plugin, and it appears to partially work. I get the Google Map "footprint" -- the Google logo, a box, zoom slider, etc. -- but no actual map graphics.
This plug-in requires a Google Maps API key, which I requested and properly added to the plug-in settings (checked and double-checked). Is there possibly a lag between when you get the API key and when it starts working for your site?
The site in question is still being developed, but you can see the page where I'm having the issue here.