i hope this is what you asked, i disabled all my plugins and still nothing. Is it possible the problem is in loading calendar by using {loadposition module_name}?
PHP Version 5.3.23
System Linux osa.cal.pl 2.6.32-358.el6.x86_64 #1 SMP Fri Feb 22 00:31:26 UTC 2013 x86_64
Build Date Sep 13 2013 12:21:34
Configure Command './configure' '--enable-force-cgi-redirect' '--enable-fastcgi' '--prefix=/usr/local/php53a' '--with-config-file-path=/usr/local/php53a' '--with-curl=/usr/local/lib' '--with-gd' '--enable-gd-native-ttf' '--with-ttf' '--with-gettext' '--with-jpeg-dir=/usr/local/lib' '--with-freetype-dir=/usr/local/lib' '--with-kerberos' '--with-mcrypt' '--with-mhash' '--with-mysql=/usr/local/mysql' '--with-pear=/usr/local/lib/php' '--with-png-dir=/usr/local/lib' '--with-zlib' '--with-zlib-dir=/usr/local/lib' '--enable-zip' '--enable-bcmath' '--enable-calendar' '--enable-ftp' '--enable-magic-quotes' '--enable-mbstring' '--enable-wddx' '--enable-exif' '--enable-ctype' '--with-gdbm' '--with-pcre-regex' '--with-expat-dir=/usr' '--with-freetype' '--with-filepro' '--enable-sockets' '--enable-session' '--with-freetype-dir' '--with-dom' '--with-dom-xslt=/usr/lib' '--enable-pdo' '--with-pdo-pgsql=/usr/loca/pgsql' '--with-pdo-mysql=/usr/local/mysql' '--enable-inline-optimization' '--disable-debug' '--enable-discard-path' '--enable-soap' '--with-iconv=/usr/local' '--with-xsl' '--with-openssl' '--enable-sysvsem' '--with-pgsql=/usr/local/pgsql' '--enable-dbase' '--disable-ipv6' '--with-xmlrpc' '--with-mysqli'
Server API CGI/FastCGI
Virtual Directory Support disabled
Configuration File (php.ini) Path /usr/local/php53a
Loaded Configuration File /usr/local/directadmin/data/users/saunowanie/php/saunowanie.cal24.pl/php.ini
Scan this dir for additional .ini files (none)
Additional .ini files parsed (none)
PHP API 20090626
PHP Extension 20090626
Zend Extension 220090626
Zend Extension Build API220090626, NTS
PHP Extension Build API20090626, NTS
Debug Build no
Thread Safety disabled
Zend Memory Manager enabled
Zend Multibyte Support disabled
IPv6 Support disabled
Registered PHP Streams https, ftps, compress.zlib, php, file, glob, data, http, ftp, phar, zip
Registered Stream Socket Transports tcp, udp, unix, udg, ssl, sslv3, sslv2, tls
Registered Stream Filters zlib.*, convert.iconv.*, mcrypt.*, mdecrypt.*, string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, dechunk