Recent Forum Topics phpbb drupal

Hi,

I have integrated phpbb3 and drupal 5.3. When I enables "Recent Forum Topics", it is not working for anonymous users. It is displaying a blank block. I looked into the phpbb_block_0 code in phpbb.module but I couldnt get it working. Could someone help me out please?

You can visit my website and see it yourself.

Thanks in advance,
Nithin.
http://www.bluminut.com