Invalid Login

I created a test system with asprunner about 4 days or so ago.
I have a test account with a password or test. Up until today, I could log in. Now the test project says "invalid login".
I've use MS SQL editor and can query the table correctly. I've changed the login-id to test and password to test. In fact, regardless of what I change the login id and password to this account cannot login.
I do not use a MD5 or other form of securiy, after all I'm still new to this.
I created a new dummy project and still cannot login. I deleted the account and recreated with the same credentials, not able to. Also, I tried another account with the same results. But, I have 10 others that work fine.
My SQL has no security (other than the DSN connection settings) and the account used there is mapped to Pubic with Select, Update and Insert on the test db.
What am I missing (or I guess - what could I have changed).
Thank you