Does it say that the password is wrong?
What is the URL in the browser address bar
a) with the first login attempt
b) with the next attempts?

I first thought of a MySQL 4.1 password problem, but we're using MD5() to store it internally.

Have you checked upper/lowercase?

the URL is {base_url}/admin on the first login attempt and all attempts thereafter. The password has been entered with correct case. I've even dropped all tables and installed new, then used the new autogenerated passwd to login. Cookie support is confirmed on the browser and the server. Still it reloads the login page. Also, I updated the password in the evo_users table using MD5('mypasswd') and still the same effect.

We've tried to fix it (via ICQ), and found that $_POST is always empty (even when var_dump()'ing it in _config.php).

This is really odd. Any ideas anyone?

Might be related to http://bugs.php.net/bug.php?id=23401..

I'm also having this exact issue. I cannot login to my blog at all. Anyone know whats happening or how to possibly fix?

Using 9.0.12

well, looks like it was just an issue with the skin. I was using MT_dot_org skin which apparently broke due to upgrade.

I have still this problem , what to do please ?

graziano, please give more info.

Is $_POST empty, when you put

var_dump($_POST);

e.g. in /conf/_config.php or /conf/hacks.php?

Also, which PHP version are you using?

Which b2evo version, etc..

When you have problems, please think about providing as much info as possible! Help requests like yours often just get ignored, because noone has fun with asking the obvious questions.

I opened another post here with more detailed info here
http://forums.b2evolution.net/viewtopic.php?t=7755

however var_dump($_POST);
return var_dump($_POST);

and it returns this array(0) { } ..

See the linked post for an explanation of this issue. It's not a b2evo bug.