Some errors in apache log

Hi, All.

There is lot of errors in my apache error-log file:

PHP Warning: mktime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Moscow' for 'MSK/3.0/no DST' instead in /net/www/inc/profiles.inc.php on line 127 (133)

PHP Warning:  chmod(): Operation not permitted in /net/www/plugins/phpids/IDS/Caching/File.php on line 150, referer: http://antipoint.ru/member.php

what are the problems?

Thanx.

Hi, insert this string in header.inc.php file

error_reporting(0);

date_default_timezone_set('Europe/London'); // select your time zone!

where is stored header.inc.php in D7?

Its located in your [DOLPHIN ROOT]/inc/header.inc.php

@ Zarcon - Thanks !

@SashaE - this not work, timezone isn't changed