Today, I exited evolution and unplugged the ethernet cable from my
laptop.  evolution-calendar-factory, running in the background, started
outputting the following message 8000 times per second:

org.gnome.evolution.dataserver.Calendar4[1345]: (evolution-calendar-factory:1989): libeews-CRITICAL **: e_ews_notification_get_events_sync: assertion 'notification->priv->connection != NULL' failed

Please disable this logging, or at least rate limit it to something
sane.

This bug is important because in a default jessie install, this output
go to syslog - thus, they quickly filled up my root partition, rendering
the system inoperable.

I'm not sure why ~/.xsession-errors is being redirected to syslog - I'll
track that down next and file a second bug against the responsible
package.

Thanks,
Ross