MS Access and MyODBC 5

Greetings everyone,

I use Access with MySQL for 5 years. This combination is quite reliable, but last well-working ODBC driver for me is 3.51.07
I cannot get MyODBC 5.1 working with Access 2003 at all, despite its "Generally Available" status:

It is not possible to create File DSN through ODBC manager (ODBC manager returns "General error" message)
AND
although it is possible to create System or User DSN and link table to Access 2003, when I try to open it (simply open, from Tables list) Access crashes

So, in my situation (Access + MySQL) MyODBC 5.1.4 is completely useless

Now some technical details:
Both server (5.0.51a) and client (MyODBC 5.1.4) run in Windows XP on the same machine (same things happen with remote MySQL on Win 2003 Server)
Custom cp1257 collation XML file (used since MySQL 4.0 to correctly sort Lithuanian strings)
MS Access 2003 SP2

My question is, what should I do - fill new Bug in bugs.mysql.com or problems like I've just described are already known.