[imp] Help Plz - Login failed for some reason

[Adelaide Yip]

Hi,

Whenever we login thru webmail, we receive the error: 'Login failed for some reason. Most likely your username or password was enterered incorrectly.'  The username and password entered are correct, but this error keeps appearing.

We have installed:
- Horde 2.1
- PHP 4.2.2
- IMP 3.1

'test.php' does not display any errors and the /tmp/horde.log is present but empty.

Please forward me any suggestions that you may have.

Thanks so much,
Adelaide