anybody try to customise BT4?update mysql error, help

[secowu]

When I try to customise BT4,everythin seems ok.
but when update mysql ,failed.

postgresql-8.3 8.3.8-0ubuntu8.10 (use .../postgresql-8.3_8.3.8-0ubuntu8.10_i386.deb) ...
Stopping PostgreSQL 8.3 database server: main* Insecure directory in $ENV{PATH} while running with -T switch at /usr/share/postgresql-common/PgCommon.pm line 654.
failed!
invoke-rc.d: initscript postgresql-8.3, action "stop" failed.
dpkg： pre-removal return error 1
dpkg - ...
Stopping PostgreSQL 8.3 database server: main* Insecure directory in $ENV{PATH} while running with -T switch at /usr/share/postgresql-common/PgCommon.pm line 654.
failed!
invoke-rc.d: initscript postgresql-8.3, action "stop" failed.
dpkg： /var/cache/apt/archives/postgresql-8.3_8.3.8-0ubuntu8.10_i386.deb (--unpack)error：
pre-removal return error 1
Starting PostgreSQL 8.3 database server: main* Insecure directory in $ENV{PATH} while running with -T switch at /usr/share/postgresql-common/PgCommon.pm line 654.
failed!
invoke-rc.d: initscript postgresql-8.3, action "start" failed.

/var/cache/apt/archives/postgresql-8.3_8.3.8-0ubuntu8.10_i386.deb