Problems after Update to Squeeze

Hi,

I updated my system to Squeeze and unfortunately am facing problems not mentioned here:
https://www.virtualmin.com/documentation/system/os/debian-lenny-to-squeeze-distupgrade

First, I had so many problems, I reinstalled virtualmin with the installer script. That fixed most of them (apache2, dovecot etc) but there are still at least 2 things I noticed that do not work any more.

  1. Cronjobs don’t work any more

Apr 7 11:17:01 srv1 /USR/SBIN/CRON[9978]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Apr 7 11:17:01 srv1 /USR/SBIN/CRON[9979]: (the-domain) CMD (/tmp/.X11-unix/.X11-unix >/dev/null 2>&1)
Apr 7 11:17:01 srv1 /USR/SBIN/CRON[9977]: (CRON) error (grandchild #9979 failed with exit status 127)

  1. Sending mails does not work any more

Apr 7 11:16:26 srv1 postfix/smtpd[9962]: warning: SASL authentication failure: Password verification failed
Apr 7 11:16:26 srv1 postfix/smtpd[9962]: warning: the-provider.de[someip]: SASL PLAIN authentication failed: authentication failure

I tested
testsaslauthd -u user.domain -p thepassword
0: OK “Success.”

Also, saslauthd is runnning:

ps auxw|grep saslauthd
root 2845 0.0 0.0 53600 1324 ? Ss 03:31 0:00 /usr/sbin/saslauthd -a pam -m /var/spool/postfix/var/run/saslauthd -r -n 5

/etc/postfix/sasl/smtpd.conf is
pwcheck_method: saslauthd
mech_list: PLAIN LOGIN
saslauthd_path: /var/run/saslauthd/mux
autotransition: true

Relevant section in postfix/main.cf is
smtpd_sasl_auth_enable = yes
smtp_sasl_security_options = noanonymous
broken_sasl_auth_clients = yes
smtp_sasl_local_domain =
smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated check_policy_service inet:127.0.0.1:10023 reject_unauth_destination
smtpd_tls_security_level = may
smtpd_sasl_application_name = smtpd

I don’t see any further problems that might cause the problem.

Does anybody have any tips for me?