ODBC memory leak at each new connection

[PROPAR]

I'm using SQL6.5 and ODBC32 and VisualC++5.0

I build a connection handle using
SQLAllocHandle with (SQL_HANDLE_ENV, SQL_HANDLE_DBC) and then SQLConnect.

When the connection fails (no datasource), I free resources using SQLFreeHandle with (SQL_HANDLE_DBC, SQL_HANDLE_ENV).
Then I go to step 1 and try again, allocating new handles.

Purify then declares memory leaks at each SQLFreeHandle(SQL_HANDLE_ENV, &hEnv) and SQLAllocHandle(SQL_HANDLE_ENV, &hEnv) over hEnv pointer.

Microsoft declares memory leaks corrected in ODBC 3.0 drivers, however SQL ODBC drivers 2.65.0252 and 3.0.xxxx (MDAC 2.1) are still leaking.

Is Microsoft lying ? Is there a MDAC correcting leaks or is my connection building somehow wrong ?

Thank you very much for any information about the memory leak issur in ODBC drivers.