missing eaccelerator_get() among others

I'm using eAccelerator 0.9.5 w/ PHP 5.1.6 and Apache 2.2.3 w/ the CVS 
versions of a number of Horde applications (Horde, IMP, Ingo, Turba).  
The CVS version of Horde includes the ability to access the 
eAccelerator cache directly, but when I configure Horde to do that, my 
error log reports that eaccelerator_get() is missing.

If I do a get_extension_funcs( 'eaccelerator' ), I see...

Array
(
    [0] => eaccelerator_caching
    [1] => eaccelerator_optimizer
    [2] => eaccelerator_clear
    [3] => eaccelerator_clean
    [4] => eaccelerator_info
    [5] => eaccelerator_purge
    [6] => eaccelerator_cached_scripts
    [7] => eaccelerator_removed_scripts
    [8] => eaccelerator_list_keys
    [9] => eaccelerator_encode
    [10] => eaccelerator_load
    [11] => _eaccelerator_loader_file
    [12] => _eaccelerator_loader_line
)

I see a definition for eaccelerator_get in eaccelerator.c, in a "#ifdef 
WITH_EACCELERATOR_SHM" block.  phpinfo() suggests that my eaccelerator 
build supports SHM.  I even rebuilt it using..

  ./configure \
    --with-eaccelerator-shared-memory \
    --with-eaccelerator-sessions \
    --with-eaccelerator-content-caching

and I'm still not seeing eaccelerator_get().  here's my config block 
from php.ini:

; eAccelerator - http://eaccelerator.sourceforge.net/ (fork of Turck MMCache)
extension="eaccelerator.so"
eaccelerator.allowed_admin_path="/usr/local/projects/webmail/html-ssl/cache"
eaccelerator.shm_size="16"
eaccelerator.cache_dir="/var/tmp/phpa"
eaccelerator.enable="1"
eaccelerator.optimizer="1"
eaccelerator.check_mtime="1"
eaccelerator.debug="0"
eaccelerator.filter=""
eaccelerator.shm_max="0"
eaccelerator.shm_ttl="0"
eaccelerator.shm_prune_period="0"
eaccelerator.shm_only="0"
eaccelerator.compress="1"
eaccelerator.compress_level="9"

What am I doing wrong?

Liam

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