Somehow broke logger, thereby breaking everything

I don't have another 2TB disk to back up to, so I can't really reset to factory default.

I tried to do an OS reinstall (as shown here: faq.php#How_do_I_re-install_the_firmware%3F), but it didn't solve the problem. It "worked", I think -- passwords are reset, some file dates are new -- but it didn't fix the problem at all.

To repeat, I get this error all the time:

Setting up mysql-server-5.0 (5.0.32-7etch8) ...
Stopping MySQL database server: mysqld.
logger: invalid option -- i
BusyBox v1.14.3 (2009-08-12 21:37:19 UTC) multi-call binary

Usage: logger [OPTION]... [MESSAGE]

Write MESSAGE to the system log. If MESSAGE is omitted, log stdin.

Options:
	-s	Log to stderr as well as the system log
	-t TAG	Log using the specified tag (defaults to user name)
	-p PRIO	Priority (numeric or facility.level pair)

ATTENTION: An error has occured. More info is in the syslog!

(That particular output is from an apt-get upgrade attempt, but I get the same thing with /etc/init.d/mysql start.)

And that means Squeezebox Server won't work.

Does anyone else have an idea for how to rescue my system? Or is it time to go buy another NAS box to backup my ReadyNAS to.

Thanks.

Adam