capistrano2 deploy problems

Since I moved to capistrano2, I'm getting problems with the deploy.

My server runs a mongrel_cluster behind Apache (on Linux).

- On cold start, it looks for script/spin, which isn't there.
- On restart, it tries to run script/process/reaper, which fails

It looks to me like capistrano assumes I'm using fcgi.

What do I need to do to fix this?