Problem with Mysql 5.0.51

If you use Mysql 5.0.51 and use in sql query GROUP BY with ORDER BY without other tables then you not see correct result.

For example: Client side uses SQL query
"SELECT * FROM care_uk_sites cus, permissions p GROUP BY cus.id, cus.site_name, cus.division_id ORDER BY site_name ASC"

and old sql query used on admin side:
"SELECT * FROM care_uk_sites cus GROUP BY cus.id, cus.site_name, cus.division_id ORDER BY site_name ASC"

Currently we have SQL query with fixed bug:
SELECT * FROM care_uk_sites cus ORDER BY site_name ASC - this is the same SQL query but without GROUP BY, which is not need