I've just pushed some commits to busybox-power's GIT repository, including one to include and enable a new version of the shell history patch (albeit a bit later than intended). I'm pretty confident about this one, with the patch being modified several times already. As said before, if no issues are found with the new version of the patch, it will be included in the next busybox-power release. You can find the patch here. Corrections etc. are highly appreciated.

For those who haven't read previous pages of this thread: with the mentioned patch, BusyBox' history issues with using multiple shell instances are gone.

Don't worry, it didn't sound so to me . Again, thanks for the review, much appreciated.