I've recently released a new beta version of my Google Sitemaps Generator Plugin and would like to know if there were any problems with this release. If not, this version will be come the new stable version soon, so please report any difficulties you might have had.
What's new in this beta release:
* Added support for robots.txt
* Switched YAHOO ping API from YAHOO Web Services to the "normal" ping service
* Search engines will only be pinged if the sitemap file has changed
You can download the new release here (the 3.0b8 version).
Thanks for your feedback!