XMLsitemap errors when using nginx as webserver?

Since moving my D7 sites to an nginx server, I am getting strange sitemap links, including timestamp data like this:
(is there a known issue with this module and using nginx? http://domain.com replaced by ... for each link so entire sitemap can display here)

.../content/earth-will-age-man-be-written-stone2012-10-21T08:35Zyearly1.0 .../content/ethopian-wolf-genetically-vulnerable-and-nearing-extinction .../content/spade-toothed-beaked-whale-worlds-rarest-whale2012-11-06T19:09Zyearly1.0 .../content/englands-fens-are-habitat-rare-wildlife-and-biodiversity2012-11-07T10:42Zyearly1.0 .../content/ocean-acidification-destroying-antarctic-marine-life .../content/wildlife-crime-threatens-species-and-nations .../content/worlds-largest-shark-sanctuary-cook-islands .../content/polar-bear-trade-ban .../content/west-antarctic-ice-sheet-warming-antarctica2012-12-25T05:07Zmonthly1.0

Same problem with a multilingual sitemap, except the problem is worse as the path language code (tl in this case) is attached to the "daily" "monthly" "yearly" and timestamp info as is shown here:

http://domain/tldaily1.0 http://domain/tl/content/habitat http://domain/tl/node/223 http://domain/tl/node/227 http://domain/tl/content/welcome-extinction-02013-01-16T10:49Zmonthly1.0 http://domain/tl/content/habitat-02013-01-16T11:07Zmonthly http://domain/tl/content/extinct-wild-02013-01-16T10:27Zmonthly1.0 http://domain.in/tl/users/gitavpl 


the entire sitemap for the "tl" language, above, is given here as I download it and open it in a text editor is here:
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="/sitemap.xsl"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
<url><loc>http://domain.com/tl</loc><changefreq>daily</changefreq><priority>1.0</priority></url>
<url><loc>http://domain.com/tl/content/habitat</loc></url>
<url><loc>http://domain.com/tl/node/223</loc></url>
<url><loc>http://domain.com/tl/node/227</loc></url>
<url><loc>http://domain.com/tl/content/welcome-extinction-0</loc><lastmod>2013-01-16T10:49Z</lastmod><changefreq>monthly</changefreq><priority>1.0</priority></url>
<url><loc>http://domain.com/tl/content/habitat-0</loc><lastmod>2013-01-16T11:07Z</lastmod><changefreq>monthly</changefreq></url>
<url><loc>http://domain.com/tl/content/extinct-wild-0</loc><lastmod>2013-01-16T10:27Z</lastmod><changefreq>monthly</changefreq><priority>1.0</priority></url>
<url><loc>http://domain.com/tl/users/gitavpl</loc></url>
</urlset>