I recently upgraded a small server to Ubuntu 12.10 (from 12.04), thus upgrading PHP from 5.3 to 5.4. However, I'm getting this in root's mailbox several times a day:

Subject: Cron <root@xxxxxxx>   [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -ignore_readdir_race -cmin +$(/usr/lib/php5/maxlifetime) ! -execdir fuser -s {} 2>/dev/null \; -delete
Content-Type: text/plain; charset=ANSI_X3.4-1968
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <HOME=/root>
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=root>
Message-Id: xxxxxxxxxxxxxxxxxxxxxxxx
Date: Sun,  9 Dec 2012 05:09:02 -0500 (EST)

Failed loading /usr/lib/php5/20090626+lfs/ioncube_loader_lin_5.3.so:  /usr/lib/php5/20090626+lfs/ioncube_loader_lin_5.3.so: undefined symbol: php_body_write

I assume that's coming up because it's for PHP 5.3. How can I just get rid of ioncube? I have no need for it, I don't even remember installing it. That .so file doesn't exist, and I've grep'd several locations for "ioncube" and I can't seem to figure how to stop that message from flooding the mailbox.