XML Sitemap stopped working I don`t know exactly when but it seems to me after upgrade of some modules and core, sitemap stopped working. Using latest Drupal 7.17 and XML Sitemap 7.x-2.0-rc1

You can see it with some kind of error here http://www.testtest.detect.by/sitemap.xml (Use Firefox to get it displayed)

How could i know what`s the problem?

Thanks in advance!
Your sitemap seems to work. When viewing the source of your sitemap, the XML needed for crawlers is displayed.

If you're talking about the blank page you get to see when viewing it in your browser: see if you've enabled the "include stylesheet for humans" option in the configuration of the module.