I recently upgraded to w3 total cache and my site is running quite fast until I tried to reactivate this plugin. I really love the idea of not bother posters additional hurdles and had been using WP Captcah Free on my previous blog successfuly.
Anyway, it seems to work well when trying to comment in firefox. But once use my Internet Explorer 8 I get this error:
Benutzer-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; Creative AutoUpdate v1.40.01)
Zeitstempel: Mon, 30 Aug 2010 07:05:14 UTC
Meldung: 'document.getElementById(...)' ist Null oder kein Objekt
Can you have a look at it? Thanks,