Cannot login to vista using domain account

[CWestwater]

I have a complicated issue that I hope someone can help me with. Basically I
cannot seem to login using my domain account (Windows 2003 domain) when on
any Vista machine (both pre and post SP1).

I can login fine to any XP machine on the network along with the 2003
servers we have. When I type in my username and password in Vista I get the
message "The username or password is incorrect". I have got a fellow Domain
Admin to log into the exact same machines and he can with no issues.

We use smartcard's with and MS PKI solution to login in the laptops. I can
going to my laptop using my smartcard fine, just not when I try to type in my
username and password.

I have looked at my account in AD and it seems fine. Does anyone have any
ideas what I can try or look for? I have had this issue since we first tried
Vista, but I kinda ignored it as I could login my laptop using my smartcard.
But I just got a new desktop (Dell Precision Quad core with 4GB RAM and Vista
Business 64bit) and I can't log in now on it!

[Jane C]

Did you remember to login using the format domainname\username then
password?

[CWestwater]

yep and I tried using my cwestwater@domain.local - no joy

[Kerry Brown]

Is there anything in the event logs on the Vista computer or the domain
controller when the logon fails?

[CWestwater]

Hi Kerry, the logs are clear on both the vista box and the DC.

[Kerry Brown]

Nothing in the Security log on the server?