Changes with nginx 1.0.0                                         12 Apr 2011
    *) Bugfix: a cache manager might hog CPU after reload.
       Thanks to Maxim Dounin.
    *) Bugfix: an "image_filter crop" directive worked incorrectly coupled 
       with an "image_filter rotate 180" directive.
    *) Bugfix: a "satisfy any" directive disabled custom 401 error page.
-- 
Igor Sysoev