Dàrent, yes you need the source code and knowledge of how to patch and compile code. You also need enough knowledge to be able to recover your system if you break anything. So I do not recommend digging further if you don't already know. It's too risky.
Many people will also see bug 755842, which sounds very similar to this one. I haven not looked at this bug in detail but it sounds different simply because the place plugin is a factor.
Dàrent, yes you need the source code and knowledge of how to patch and compile code. You also need enough knowledge to be able to recover your system if you break anything. So I do not recommend digging further if you don't already know. It's too risky.
Many people will also see bug 755842, which sounds very similar to this one. I haven not looked at this bug in detail but it sounds different simply because the place plugin is a factor.