Feed Headlines date not update.

My feed headlines get stuck with old news at the old date. It is not update for me, even in the feed setting in internet option is set to update at every 15 minutes.

I also try by deleting all feeds in tab bar manually and add them back later. It can update only to the day I added them. After that it struck again.

This problem occured to me for months.
Yesterday I've accidentally found how to solve this problem. I just updated IE from IE7 to IE8 then this problem was automaticly solved.
So, if somebody has this problem just reinstall IE or update it.
Thanks.