Password problems with xp

Hi,Could you help me please.

I had an application on windows2000 that worked properly between several database.

I chose the option to use the same password for all lotus applications( security option of the user times ).

With xp, it doesn’t work anymore and I have an error report message from xp and it asking me my password…

Have you got an idea?

I think that it comes from the xp sécurity with problems of keeping the password and fo using it for the server