Update MySQL fails

uname -a
mysql --version
cat /usr/local/directadmin/custombuild/options.conf

Linux ****.****.** 2.6.24-22-xen #1 SMP Mon Nov 24 21:35:54 UTC 2008 x86_64 GNU/Linux

mysql  Ver 14.14 Distrib 5.1.43, for pc-linux-gnu (i686) using readline 5.1

#PHP settings. default_php possible values - 4 or 5
default_php=5
php4_cli=no
php4_cgi=no
php5_cli=no
php5_cgi=yes
zend=no

#Possible values - 4.1, 5.0, 5.1
mysql=5.1
mysql_inst=yes
mysql_backup=yes

#Possible values - 1.3, 2.0 or 2.2
apache_ver=2.2

#Web applications
phpmyadmin=yes
atmail=no
squirrelmail=yes
roundcube=yes
uebimiau=no

#Mail options
exim=yes
mail-header-patch=yes
dovecot=yes

#Statistics
awstats=yes
webalizer=no

#FTP options
proftpd=no

#Jailed shell (beta)
jail=no

#CustomBuild options
custombuild=1.1
autover=no
bold=yes
clean=yes
clean_old_webapps=yes

#Cron settings
cron=yes
[email protected]
notifications=yes
updates=no
webapps_updates=yes

#CustomBuild 1.2 settings
php6_cli=no
php6_cgi=no
php_ini=no
#Possible values - recommended or dist
php_ini_type=recommended
cleanapache=no
fileserver=1
eximconf=no
clean_old_tarballs=yes
da_autoupdate=no
php5_ver=5.2