WordPress Comment post time issue

I am getting issue with my current WordPress installation. Whenever anybody postin开发者_StackOverflowg any comment on a blog, the time is less than 2 hrs of the current time of posting. I have checked the server time and it is showing properly in php and mysql both. But still when each comment posted, the comment_date column of wp_comments table inserted value with 2 hrs subtracted value.

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http://en.support.wordpress.com/settings/general-settings/

Timezone is set to Coordinated Universal Time, UTC by default...