When logging with passwords containing characters translated to html entities (like < after giving the "less-than" character to the password filed of the login form) sends unconverted html entity directly to mysqli_real_connect, so the login fails.
Console logins to mysql with mysql binary client works fine with these passwords.
It seems, this problem was introduced in one of the latest PMA versions or has some dependance on the newest PHP (5.2.4).
Logged In: YES
user_id=326580
Originator: NO
this comes due to PMA_remove_request_vars()
Logged In: YES
user_id=326580
Originator: NO
Fixed in subversion, thanks for reporting.
Logged In: YES
user_id=1361754
Originator: YES
Thank you for fixing this, looking forward the next release :-)
Logged In: YES
user_id=1361754
Originator: YES
Fixed in subversion, thanks for reporting.