Quoting Thor Lancelot Simon,

> I have another machine under my desk now that's running Solaris 2.5.  I have
> a NetBSD kernel with all the COMPAT options in.  Linux executables seem to
> work. The last time I tried it, SCO executables worked.  The statically-linked
> /sbin/sh from Solaris works, too.  But the dynamically-linked /usr/bin/sh
> from Solaris does *not* work -- instead, I get "sh: Exec Format Error.

All Solaris 2.4 i386 binaries work just fine for me.. You might be missing
the dynamic linker? I can't imagine that something would change that much
from 2.4 to 2.5 that the emulation doesn't work anymore.

- Frank