nginx 1.0.4Edit

From the official release announcement:

Changes with nginx 1.0.4                                         01 Jun 2011

   *) Change: now regular expressions case sensitivity in the "map"
      directive is given by prefixes "~" or "~*".

   *) Feature: now shared zones and caches use POSIX semaphores on Linux.
      Thanks to Denis F. Latypoff.

   *) Bugfix: "stalled" cache updating" alert.

   *) Bugfix: nginx could not be built --without-http_auth_basic_module;
      the bug had appeared in 1.0.3.