Well, I messed with this a lot last night and couldn't fix it to save my life. What's going on is that for some reason "foward" is mapped to my ESCAPE key (along with cancel target). So, each time I hit ESCAPE I'm moving forward and cancelling target.
I tried everything I could think of, I cancelled all my secondary bindings, I did a /binddump and looked for something mapped to ESCAPE (or *anything* using forward). Even tried hitting the "reset to default mapping" on the options.
I'm using the latest cvs as of last night (I double checked after having problems), and I know it's MQ related because I do not have this problem if I unload MQ. Also, I did not have this problem until yesterday (and changed nothing in my bindings or anything really since this started right when I logged in after the patch.)
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Anyway, what info do you need to debug this Lax? I could attach a debugger or whatnot, but I'm not sure what would be the best information to determine what is causing this....
Also, while I'm posting, when did they change "foward" to include "stand+forward"?

