maildrop + bogofilter: error writing to filter

[Jonathan Kamens]

Do you have other filters configured? I am wondering if perhaps 
bogofilter is not actually the filter that is causing the problem.

I know you said that the problem goes away when you disable the 
bogofilter xfilter line, but in the >30 years I've been working with 
computers, I've seen many many cases where A+B, A by itself, and B by 
itself, all work fine, and A is the problem.

   jik