Any Tips on Using LJGravatar?

Hello,

I have recently bitten the bullet and gotten a wordpress log. I've successfully widgetized a layout and installed various plugins, such as Brian's Threaded comments and openID.

One plugin, however, LJGravatar is causing me a great deal of trouble. I was able to activate it, and it is able to show Gravatars from the Gravatar.com website. Users who are not registered with Gravatar.com have the blue default icon displayed. However, I am unable to make the part of the script that allows you to use LJ userpics to work. It seems that it is supposed to grab the LJ userpics from LJ and store them in a folder on your server. (It seems to be triggered when the commenter writes their name as "username@livejournal")

Any help with this issue would really be appreciated.

[EDIT: The plugin author has responded and has told me how to resolve the issue. My problem was that my host did not allow usage of system(), so if you can't use wget in this way, you need to edit the script. Open up gravatar.php in notepad, and before that string, place // This will disable that part of the script, meaning that it will just load the image from LJ instead of caching it on your server. ]