Logcheck devel - Jul 2014 - Bug#755158: After dist-upgrade logcheck cannot open logoutput

Package: logcheck
Version: 1.3.15
Severity: important

After distribution upgrade from Squeeze to Wheezy logcheck sends the following
e-mails:

"Subject: Cron <logcheck at gaugino>    if [ -x /usr/sbin/logcheck ];
then nice -n10 /usr/sbin/logcheck; fi
Date: Fri, 18 Jul 2014 11:02:02 +0000 (UTC)

sort: open failed: /tmp/logcheck.hD3dDo/logoutput/*: No such file or
directory"

-- System Information:
Debian Release: 7.6
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 3.13.7 (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8) (ignored: LC_ALL
set to nl_NL.UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages logcheck depends on:
ii  adduser                         3.113+nmu3
ii  cron                            3.0pl1-124
ii  lockfile-progs                  0.1.17
ii  logtail                         1.3.15
ii  mime-construct                  1.11
ii  postfix [mail-transport-agent]  2.9.6-2
ii  rsyslog [system-log-daemon]     5.8.11-3

Versions of packages logcheck recommends:
ii  logcheck-database  1.3.15

Versions of packages logcheck suggests:
pn  syslog-summary  <none>

-- Configuration Files:
/etc/logcheck/logcheck.conf [Errno 13] Permission denied:
u'/etc/logcheck/logcheck.conf'
/etc/logcheck/logcheck.logfiles [Errno 13] Permission denied:
u'/etc/logcheck/logcheck.logfiles'

-- no debconf information

This is caused by something making /var/log/syslog root:root 600 on dist-upgrade
on my system.