to be honest, i don't think your freezes have anything to do with the filesystem.

Anyway, try to download and install SFS 1.236 from Aminet.

Your old 1.85 version installed in the RDB, will be replaced anyway by the native one which have an higher version (1.210).

It "could" work (mos will boots/execute the "startup" command which is 68K and then will use the native one) but i've never tryed it personally.

Just sent the module.com.1 via email.