In theory, the Read Striping feature should handle this on duplicated data.
Additionally, you may want to make sure that directory structures are being pinned on the drive in question (Under "Disk Options" -> "Performance" -> "Pinning"), though these should be enabled by default.
Additionally, adding better handling is something that has been requested, and we've discussed. And it's definitely something that may help here.
Though, as for the versions, I beleive that Alex has changed the handling ofr ACD, so if you wanted to try the 1.0.0.777 build, that may help out.
