FYI...Apache v2.2.21 released
14 September 2011 - "The Apache Foundation has announced* that the newly released version 2.2.21 of its free web server is essentially a bug fix and security release... The new version corrects and complements the first fix, which was released only two weeks ago... Users are advised to update their Apache installations as soon as possible. However, those who use Apache 2.0 will still need to wait: corrections for this version are scheduled to be incorporated in the release of version 2.0.65 in the near future. Those who use version 1.3 are not affected by the byte range bug..."
Release Date: 2011-09-14
Criticality level: Moderately critical
Where: From remote
... vulnerability is reported in versions 2.2.12, 2.2.13, 2.2.14, 2.2.15, 2.2.16, 2.2.17, 2.2.18, 2.2.19, and 2.2.20.
Solution: Update to version 2.2.21.
Original Advisory: http://httpd.apache.org/security/vulnerabilities_22.html#2.2.21