help with <xhtml-tags/>-output

hello there!

i'd like to ask, wether my project to be found under

http://test.my-taxi.com/st/index.xml

is correct and wellformed.
it happens that w3c-validator does not think so.

in addition to that i would like to ask if XSL really gives out <meta http-equiv="content-type" content="text/html; CHARSET=iso-8859-1"/> when you paste this in the XSL-file.
according to my webdeveloper-bar in firefox the produced xhtml-sourcecode ist "<meta http-equiv="content-type" content="text/html; CHARSET=iso-8859-1">" (Attention: Without the closing slash at the end)
you guess what my problem is with that.

thank you for helping links or comments!

greetings from germany,
henry