Might be caused by nothing listening on /dev/xconsole – remediation: Comment out the relevant entries in /etc/rsyslogd.conf:
Change:
daemon.*;mail.*;\
news.err;\
*.=debug;*.=info;\
*.=notice;*.=warn |/dev/xconsole
To:
#daemon.*;mail.*;\ # news.err;\ # *.=debug;*.=info;\ # *.=notice;*.=warn |/dev/xconsole