I was on version 3.2 and one of the blogs I manage had a WSoD when I tried to sign in and get to the dashboard. I narrowed it down and it only didn't work when I had the Contact Form 7 plugins active. So I updated to 4.0 ad updated the plugin but I still get the error.
I have another blog with the exact same forms running and it's fine. It's only on this one that we can't access wp-admin when this plugin is active.
Any suggestions? I was hoping to avoid switching to a different plugin but at this rate I won't have a choice.