I don't think it has anything to do with the PHP installation itself.

Jess, I suggest you make a complete new installation of Roundcube 0.7, just for "the fun of it".
Test, if it works with the new installation, without any additional plugins.

[23-Dec-2011 15:55:54] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/php/lib/php/extensions/no-debug-non-zts-20090626/m$

These error messages come from a PHP extension, which couldn't be loaded. This can cause segfaults of Apache. Don't think this is the main reason though, as Roundcube still seems to be loaded fine, but you just can't see the images.
Make sure that the webserver knows how to handle jpg files (check mime.types).


On Fri, Dec 23, 2011 at 8:56 PM, Benny Pedersen <me@junc.org> wrote:
On Fri, 23 Dec 2011 11:09:26 -0600, Jess Collicott wrote:

> [23-Dec-2011 08:40:33] PHP Warning: PHP Startup: Unable to load
> dynamic library

apache and php dont agree on threads supported, need to remove php
completely and restall (thread supported) php version if apache is
thread suppported

if not thread supported apache install the non threaded version of php
should work

its my best guess :)
BT/86b78bab