Hi
If you mean the install at http://dazzy.eu/zenphoto-2012-12-07/
I managed to get the sitemap working with securitylogger off using seo_locale and subdomains switched off as you can see here on sitemap:
http://dazzy.eu/zenphoto-2012-12-07/cache_html/sitemap/sitemap-zenphoto-albums-1.xml
I changed the last debug_plugins to true
Hopefully you can find the problem there
I did find the problem. Not sure why, but plugins are loading in a different order on your site than mine. But the fix is easy, I have adjusted the priorities of the plugins involved so that the dynamic_locale will load before the sitemap.
Still do not understand why securitly logger on/off would make a difference, though.
Fix will be in tonight's nightly build.