I'm finding this thread quite interesting as I've been having an issue with the /d and /e parameters for quite a while now - long before AR 9.0B.
My issues started when the modules started rolling out with the, then "new", sign on window - the one that started having the
"Remember user name" check box and where
"the saved information is based on your Windows authenticated user name". Ever since then, I realised at a number of sites that the /d and /e parameters were being ignored. I thought that for some reason this was the desired behaviour of the "new" sign on window and rather than giving users multiple shortcuts, I just started telling them to choose the correct company from the
"previously opened" list.
Personally I believe that the startup parameters should overide all else but never got around to complaining about it

Now, that I read this, I'm realising that it wasn't the "desired" behaviour and that I should have mentioned it earlier. I'm very surprised that it's only now surfaced though as it's been several months to a year that this started happening at my clients. Could there be something different about my configuration ? Hmmm... Not that it may have any direct bearing on the issue, but I
always implement the setting to remove the
"Remember password" check box from the sign on window - maybe others aren't doing that.
Pete