freebsd-update 10.0 -> 10.1 segmentation fault (nsswitch.conf w mysql)

[Thomas Krause]

Hi,
binary update from Freebsd 10.0 to 10.1 Release fails after
1st reboot with 10.1 kernel and running

# freebsd-update install
Segmentation fault

I found, removing the mysql entry from /etc/nsswitch.conf helps.
But running

# freebsd-update install

again, I get "Segmentation fault" again - the "old" nsswitch.conf
with mysql entries were installed.

How can I fix that (where come the old nsswitch.conf from - a
find / doesn't help).

Regards,
Thomas.