Cannot drop user (PostgreSQL 8.1.11)

I trying drop old user but got some strange issues:

template1=# drop USER szhuchkov;
ERROR: role "szhuchkov" cannot be dropped because some objects depend on it
DETAIL: 1 objects in database billing
2 objects in database shop

ok... lets look closer these two DB:

shop=# drop USER szhuchkov;
ERROR: role "szhuchkov" cannot be dropped because some objects depend on it
DETAIL: owner of type pg_toast.pg_toast_406750
owner of type pg_toast.pg_toast_1770195
1 objects in database billing

hm damn strange...

shop=# SELECT * from pg_user where usename='szhuchkov';
usename | usesysid | usecreatedb | usesuper | usecatupd | passwd | valuntil | useconfig
-----------+----------+-------------+----------+-----------+----------+----------+--------------------------------
szhuchkov | 16387 | f | f | f | ******** | | {"search_path=bill, billstat"}
(1 запись)

Lets look pg_type for these two types:

shop=# SELECT typname,typowner from pg_type where typname IN ('pg_toast_406750', 'pg_toast_1770195');
typname | typowner
------------------+----------
pg_toast_1770195 | 10
pg_toast_406750 | 10
(записей: 2)

owner right (pgsql)

Lets look db billing:

billing=# drop USER szhuchkov;
ERROR: role "szhuchkov" cannot be dropped because some objects depend on it
DETAIL: owner of function vz_vds_ip_add(integer,bigint)
2 objects in database shop

billing=# SELECT proname,proowner from pg_proc where proname like '%vz_vds_ip_add%';
proname | proowner
---------------+----------
vz_vds_ip_add | 10
(1 запись)

ok... again right owner... no signs of szhuchkov

Last test... lets try pg_dumpall -s :

[pgsql(at)ctrl7 /home/mboguk]$ pg_dumpall -s | grep szhuchkov
CREATE ROLE szhuchkov;
ALTER ROLE szhuchkov WITH NOSUPERUSER INHERIT NOCREATEROLE NOCREATEDB LOGIN PASSWORD '*******';
ALTER ROLE szhuchkov SET search_path TO bill, billstat;
GRANT bill1c_r TO szhuchkov GRANTED BY pgsql;
GRANT bill_r TO szhuchkov GRANTED BY pgsql;
GRANT billexch_r TO szhuchkov GRANTED BY pgsql;
GRANT billstat_r TO szhuchkov GRANTED BY pgsql;
GRANT shop_r TO szhuchkov GRANTED BY pgsql;
GRANT templar_r TO szhuchkov GRANTED BY pgsql;

Nothing more... so according pg_dumpall szhuchkov also doesnt have any active objects in DB.

In all other sides DB work 24x7 well without any other issues
(and because 24x7 requirements i cannot stop DB and drop user from single user mode).

Any ideas? or what to check else?

--
Maxim Boguk