[Serusers] 'localhost' in the `serweb' login page

Dear SER experts, I unpacked 'serweb' (last CVS version) under www-trees on the two Linux machines. I modified 'config_path.php' only, just to change $config->root_path to "/serweb/html/" value, nothing else. However, on the first machine the 'localhost' word is appeared instead of right domain name. Moreover, this 'serweb' login form refuses any registered user to being logged in, with error "Bad username or password" (Of course, there is no problem with registering with `serctl' tool). The second machine shows the right domain name, and allows registered users to log in by the serweb form. Thank you for any help in advance. -- Best regards, Timur Elzhov Warelex LLC