下記のようなログが出力されてHTTPDが起動しない事がある。

[Sun Oct 29 08:22:04 2006] [error] Spurious SSL handshake interrupt [Hint: Usual
ly just one of those OpenSSL confusions!?]
[Sun Oct 29 09:50:33 2006] [warn] RSA server certificate is a CA certificate (Ba
sicConstraints: CA == TRUE !?)
[Sun Oct 29 09:50:33 2006] [warn] RSA server certificate CommonName (CN) `localh
ost.localdomain' does NOT match server name!?
[Sun Oct 29 09:50:35 2006] [error] Cannot allocate shared memory: (17)File exist
s
[Sun Oct 29 09:54:51 2006] [warn] RSA server certificate is a CA certificate (Ba
sicConstraints: CA == TRUE !?)
[Sun Oct 29 09:54:51 2006] [warn] RSA server certificate CommonName (CN) `localh
ost.localdomain' does NOT match server name!?
[Sun Oct 29 09:54:52 2006] [error] Cannot allocate shared memory: (17)!!!!!!!!!!
!!!!!!!!!!
[Sun Oct 29 09:55:50 2006] [warn] RSA server certificate is a CA certificate (Ba
sicConstraints: CA == TRUE !?)
[Sun Oct 29 09:55:50 2006] [warn] RSA server certificate CommonName (CN) `localh
ost.localdomain' does NOT match server name!?
[Sun Oct 29 09:55:51 2006] [error] Cannot allocate shared memory: (17)!!!!!!!!!!
!!!!!!!!!!

こういう時には、SSLのキャッシュを一度削除してみましょう。
Please remove SSL apache cache file:

# rm -rf /var/cache/mod_ssl/scache