I have a Mac running Snow Leopard connected to an Active Directory domain. I can share folders on the Mac and view files from Windows without problems.

When I try to enable my Mac account for write access through System Preferences, I'm prompted for my account's password. Even though I'm entering the right one, I get an "Incorrect Password" response. The same process works fine for the local Mac administrator account; it's the Active Directory account I'm having problems with.

I followed the advice on this page on apple.com without success: (I used the Mac to reset my domain password, and re-created my login keychain)

If you want to use a user account that existed before you installed Mac OS X 10.3 (Panther), you may need to reset the password for the account using Accounts preferences.

Can anyone suggest what might be wrong? Until I fix this I can't write to my Mac file share from Windows.