Trackback comment has crashed my WordPress Dashboard and Blog.

I have received a trackback comment from my friend. See the post

And as soon as I approve the comment from my WordPress Dashboard, it just crash my dashboard and my Blog. I can’t access my Blog.

It will display following message at ebestagent.com:

The e-mail could not be
sent.
Possible reason: your host may have disabled the mail() function…

I had to go to phpmyadmin in MySQL database and unapprove this comment to get my Dashboard and Blog back online.

I tried again see if this trackback comment really causing my blog to crash, sure enough, this trackback is the source of the problem.

I’d like to hear from anyone who experience the same or similar problem like this one.

Please let me know~ Thank you in advance.