Bug#391864: apache2.2-common: install fails because all mod-enabled packages test as invalid

[Moshe Yudkowsky <speech@pobox.com>]

Package: apache2.2-common
Version: 2.2.3-1
Severity: grave
Justification: renders package unusable


apache2.2-common again fails to install, this time with a different set of errors. 
 
# apt-get -f install
Reading package lists... Done
Building dependency tree... Done
Correcting dependencies... Done
The following extra packages will be installed:
  apache2.2-common
The following packages will be REMOVED:
  apache2-common
The following NEW packages will be installed:
  apache2.2-common
0 upgraded, 1 newly installed, 1 to remove and 152 not upgraded.
14 not fully installed or removed.
Need to get 0B/917kB of archives.
After unpacking 180kB of additional disk space will be used.
Do you want to continue [Y/n]? y
WARNING: The following packages cannot be authenticated!
  apache2.2-common
Install these packages without verification [y/N]? y
(Reading database ... 269785 files and directories currently installed.)
Removing apache2-common ...
Stopping apache 2.0 web server...apache2: Syntax error on line 124 of /etc/apache2/apache2.conf: Syntax error on line 1 of /etc/apache2/mods-enabled/actions.load: API module structure `actions_module' in file /usr/lib/apache2/modules/mod_actions.so is garbled - perhaps this is not an Apache module DSO?
 failed!
invoke-rc.d: initscript apache2, action "stop" failed.
dpkg: error processing apache2-common (--remove):
 subprocess pre-removal script returned error exit status 1
Errors were encountered while processing:
 apache2-common
E: Sub-process /usr/bin/dpkg returned an error code (1)


I removed the mods-enabled/actions.load file, but then apache2 chocked on the very next file with a similar error message.

I've attempted several different fixes, including for example removing everything from the mods-enabled directory, but of course that causes apache2.conf to fail to load as missing modules take their toll.

I am attempting to go backwards to the "testing" release, but I am being thwarted even as I attempt to remove apache2.2-common and pin to the "testing" release by similar errors. 

Any suggestions on how to fix this would be appreciated.



-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (990, 'unstable'), (500, 'testing'), (500, 'stable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.17-2-k7
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)