hello, I just installed the plugin, too, and have the same issue in my blog http://dachastartup.com!
I also updated to 3.4!
Ping Test
Trying to ping: http://submissions.ask.com/ping?sitemap=http%3A%2F%2Fdachastartup.com%2Fsitemap.xml.gz. The sections below should give you an idea whats going on.
Errors, Warnings, Notices:
WP_DEBUG was set to false somewhere before. You might not see all debug information until you remove this declaration!
Notice: WP HTTP API Web Request failed: Couldn’t resolve host ‘submissions.ask.com’ in /home/dachastart/domains/dachastartup.com/public_html/wp-content/plugins/google-sitemap-generator/sitemap-core.php on line 2364
Result (text only):
Result (HTML):
Thank you