Problem with a password containing space char

Binary package hint: dbconfig-common

Description: Ubuntu 10.04 LTS
Release: 10.04
dbconfig-common version: 1.8.44ubuntu1

Process of instalation (for example) phpmyadmin:
* the installation script uses dbconfig-common
* the bug occurs, when choosing any pasword (for phpmyadmin), containing space character, for example aaaa bbbb

In such case:

* /etc/dbconfig-common/phpmyadmin.conf contains the correct line:
dbc_dbpass='aaaa bbbb'

* but the password of the user phpmyadmin in the table mysql/user is truncated and set to 'aaaa'

As the result:
* after logging into phpmyadmin the error appears:
"Connection for controluser as defined in your configuration failed."
* the resulting truncated password which is actually set by dbconfig-common may be VERY WEAK (serious security hole)

I suppose it's bug of dbconfig-common and not a bug of phpmyadmin. (But maybe I'm wrong.)

Workaround:
* You must verify the password in the mysql database and correct it by hand with help of the mysql client.
* don't use passwords containing space character

The next problem:

When attempting to reconfigure the phpmyadmin interactively by means of
# dpkg-reconfigure -plow phpmyadmin
there is no subsequent question about phpmyadmin password. The original (corrupted) password remain unchanged even if the username was changed (for example, from 'phpmyadmin' to 'pma').
The file /etc/dbconfig-common/phpmyadmin.conf is updated OK, but the new record in the table mysql/user is created with the same (truncated) password and the old record is still remaining in the table (without the user knowing), which increases the security vulnerability.