[Nut-upsuser] upsd crashes with a "broken pipe" error

[Zach La Celle]

In /var/log/syslog

Dec 23 13:04:50 ************** upsmon[2010]: Poll UPS 
[rack1ups at localhost] failed - Write error: Broken pipe

After this, there is no longer a upsd daemon running.

Error messages follow:

Dec 23 13:04:50 ************** upsmon[2010]: Communications with UPS 
rack1ups at localhost lost
...
Dec 23 13:04:55 ************** upsmon[2010]: UPS [rack1ups at localhost]: 
connect failed: Connection failure: Connection refused

Any ideas?