This is something interesting that someone posted on my forum.
It looks like it really might be the case too:
Zero results for inurl:com.au, but plenty of results (as expected) for inurl:net.au and inurl:edu.au.
Google.com.au isn't even in the index: site:www.google.com.au. And even more confirmation is every .com.au domain (including Google's) has a PR0 right now.
If it's an April Fool's joke, I don't think the Australian webmasters are having a good laugh. heh

Comments:
Razvan Antonescu
04/01/2005 09:06 am
Hei :) Results 1 - 10 of about 15,500,000 for inurl:com.au Where is the problem?
Barry Schwartz
04/01/2005 01:05 pm
Its back, also reported at http://forums.searchenginewatch.com/showthread.php?t=4999