blank registration page

phpinfo is enabled, but following functions are not:

disable_functions = ni_set,pfsockopen,show_source,shell_exec,passthru,exec,popen,proc_open,allow_url_fopen,ini_restore,posix_getpwuid,error_log,symlink,apache_get_modules,psockopen,proc_close,proc_open,proc_nice,proc_terminate,proc_get_status,posix_getpwuid,posix_uname,openlog,syslog,posix_uname,posix_getpwuid,posix_getpwnam,posix_kill,posix_mkfifo,posix_setpgid,posix_setsid,posix_setuid,get_current_user,getmyuid,getmygid,apache_note,apache_setenv,apache_child_terminate,closelog,debugger_off,debugge_on,imap,netscript,escapeshellcmd,escapeshellarg,virtual,pclose,pcntl_exec,chgrp,php_uname,php_ini_scanned_files,fpassthru,getrusage,posix_setgid,mysql_list_dbs,ini_get_all,fileowner,highlight_file,php_ini_loaded_file,crack_check,crack_closedict,crack_getlastmessage,crack_opendict,posix_isatty,getservbyname,escapeshellarg,posix_access,posix_times,posix_mknod,pclose,ps_fill,link

It is a shared server. I asked the host before to enable ini_set, but host replied that it wouldn't improve anything, but would decrease security. In addition, I also restored the site to an old xampp's localhost with php 5.2.9, and disabled the same functions, but the site works fine in my computer's localhost ... I mean the issue seems not related to these sitings, isn't it?

I'm sending the phpinfo link to you, please check PM.

Please PM hosting panel access and FTP access. At this point I don't know what more to advise without further monitoring error logs in panel and/or if logged to error files. If a clone works on your localhost then it's likely server related, but I don't know what server setting is doing it.

Thank you mr Kyle for your help and support. Cheers! finally resolved the issue by commenting the "php_uname"




Applied // comment to the uname line: $this->info = php_uname();

in all of following files:
/administrator/components/com_admin/models/sysinfo.php
/administrator/components/com_comprofiler/comprofiler.class.php
/administrator/components/com_comprofiler/library/cb/cb.session.php

and both of System Information and Registration Pages seem working very well now. I hope there will be no side effect from doing this... why does joomla needs to know the operating system any way?

Shouldn't be an issue, but Joomla/CB won't have a clue what OS it's running on. This could cause issues with some usages where it determines if it should use code specific to WIN or specific to LINUX servers. Usage in CB is extremely minimal as far as I am aware so you should be ok. Server seams extremely overly strict though as it's a simple info function, can do no harm.