Try:
./build update_data
John
[root@host ~]# cd /usr/local/directadmin/custombuild
[root@host custombuild]# ./build clean
[root@host custombuild]# ./build update_data
File already exists: httpd-2.2.6.tar.gz
File already exists: httpd_2
File already exists: httpd_2_freebsd
File already exists: httpd_2_debian
File already exists: mime.types
File already exists: mod_perl-2.0.3.tar.gz
File already exists: curl-7.17.1.tar.gz
File already exists: pcre-7.4.tar.gz
File already exists: libmcrypt-2.5.8.tar.gz
File already exists: mhash-0.9.9.tar.gz
File already exists: freetype-2.3.5.tar.gz
File already exists: libiconv-1.12.tar.gz
File already exists: php-4.4.8.tar.gz
File already exists: php-5.2.5.tar.gz
File already exists: php-4.4.8-mail-header.patch
File already exists: php-5.2.5-mail-header.patch
File already exists: webalizer-2.01-10-src.tgz
File already exists: proftpd-1.3.1.tar.gz
File already exists: suphp-0.6.2.tar.gz
File already exists: dovecot-1.0.10.tar.gz
File already exists: dovecot.boot
File already exists: dovecot.boot.freebsd
File already exists: dovecot.boot.debian
File already exists: dovecot.conf
File already exists: exim.conf.dovecot.patch
File already exists: autoconf-2.61.tar.gz
File already exists: automake-1.10.tar.gz
File already exists: libtool-1.5.24.tar.gz
File already exists: ZendOptimizer-3.2.8-linux-glibc21-i386.tar.gz
[root@host custombuild]# ./build squirrelmail
gzip: stdin: unexpected end of file
/bin/tar: Child returned status 1
/bin/tar: Error exit delayed from previous errors
cp: `/var/www/html/squirrelmail/data' and `/var/www/html/squirrelmail-1.4.13/data' are the same file