下面是自2.2.2版本来，最新版本做的变化列表：

Changes with Apache 2.2.3

  *) SECURITY: CVE-2006-3747 (cve.mitre.org)
     mod_rewrite: Fix an off-by-one security problem in the ldap scheme
     handling.  For some RewriteRules this could lead to a pointer being
     written out of bounds.  Reported by Mark Dowd of McAfee.
     [Mark Cox]
 
  *) Win32: Minor fixes to build more cleanly under Visual Studio 2005
     with command line builds.  [William Rowe]

  *) mod_authn_alias: Add a check to make sure that the base provider and the
     alias names are different and also that the alias has not been registered
     before. PR 40051. [Brad Nicholes]

  *) mod_authnz_ldap: Fix a problem with invalid auth error detection for LDAP
     client SDKs that don't support the LDAP_SECURITY_ERROR macro. PR 39529.
     [Ray Price <dohrayme yahoo.com>, Josh Fenlason <jfenlason ptc.com>]

  *) mod_cache: Do not overwrite the Content-Type in the cache, for
     successfully revalidated cached objects. PR 39647. [Ruediger Pluem]

  *) mod_speling: Add directive to deal with case corrections only
     and ignore other misspellings [Olivier Thereaux  <ot w3.org>]

  *) mod_dbd: Fix dependence on virtualhost configuration in
     defining prepared statements (possible segfault at startup
     in user modules such as mod_authn_dbd).  [Nick Kew]

  *) Add optional 'scheme://' prefix to ServerName directive,
     allowing correct determination of the canonical server URL
     for use behind a proxy or offload device handling SSL; fixing
     redirect generation in those cases. PR 33398. [Sander Temme]

  *) Added server_scheme field to server_rec for above. Minor MMN bump.
     [Sander Temme]

  *) mod_cache: Make caching of reverse SSL proxies possible again. PR 39593.
     [Ruediger Pluem, Joe Orton]

  *) Worker MPM: On graceless shutdown or restart, send signals to
     each worker thread to wake them up if they're polling on a
     Keep-Alive connection.  PR 38737.  [Chris Darroch]

  *) worker and event MPMs: fix excessive forking if fork() or child_init
     take a long time.  PR 39275.
     [Greg Ames, Jeff Trawick, Chris Darroch <chrisd pearsoncmg.com> ]

  *) configure: Add "--with-included-apr" flag to force use of the
     bundled version of APR at build time.  [Joe Orton]

  *) Respect GracefulShutdownTimeout in the worker and event MPMs.
     [Chris Darroch, Garrett Rooney]

  *) mod_mem_cache: Set content type correctly when delivering data from
     cache. PR 39266. [Ruediger Pluem]

  *) mod_autoindex: Fix filename escaping with FancyIndexing disabled.
     PR 38910.  [Robby Griffin <rmg terc.edu>]

  *) mod_charset_lite: Bypass translation when the source and dest charsets
     are the same. [Jeff Trawick]