'Unable to read from thread kernel pipe' error in Apache

[Will McCutcheon]

Sven Willenberger wrote:

> Did you compile apache with worker threads? Although I did have success
> using MPM=worker with libkse, I found that IMP mail crashed apache
> almost immediately. Turns out that a lot of PHP modules, etc are not
> thread safe,

Er, I'm not sure.  I just did "portinstall www/apache2".  Is there a 
particular make option I should try specifying?  Thanks for your reply!

W