I don't recall ever changing the default target or its settings in most plugin projects.
I certainly never did that with wxSmith, so it probably is indeed getting compiled without optimizations.
Post build, I do try to reduce the executables size by both removing their symbols and compressing them.
It goes without saying, if anyone does get a crash with my binaries, they should try to reproduce it with the nightly build instead. While I try to keep my local changes to a minimum, there are enough of them to warrant not using my build as a representation of the state of the trunk.