BOE XI 3.1 AD SSO works but Manual login Doesn't

Hi,

I'm having a really weird issue

Currently I have a Windows 2003 server with BOE XI 3.1 SP3 FP3.1 that is configured for Windows AD and SSO

It has been working fine, but last week suddenly Manual AD authentication doesn't work anymore, The problem is in Infoview and also from the CMC

The weird thing is that SSO with AD is working fine so I don't know what else to check at this point

I have tested kinit and it works fine

Any ideas?

thanks,

Alejandro