[Help]: Wordpress blog comment problem

Whenever I post comment on any wordpress blog it shows a blank page after comment submit.
Note:
1. I do write comment relevant to post
2. I do not use any proxy server.

What can be the case? Please help.

You often experience a blank page after posting if you fall into the spam trap on the site, this is what you get when Askimet flags the comment.

Close the browser, clear your cookies and change your IP address . Then try again - visit the site, visit a post and wait, visit another post after 30 seconds and post on this second post at that site but use a different link url - eg cnn . com , use a regular sounding name and make a detailed relevant comment.

If this sticks then it confirms that your site and or ip address is being flagged by anti spam software on the site.