Meanwhie here's some additional info... (and yes, please post back as to the findings, as I would be interested as well...)
...After checking through the RMX-108 manual downloaded from the roksan site, it seems there is a misprint in the manual... and it starts refering to an SRC-1600. With a quick search this turns up
www.sun-wave.com who are the oem supplier of many remote controls. The new roksan remote is their SRC-1200.
In any case, if you download the manual for the SRC-1600 (if you have the RMX-108 ) it contains far more information on seting up and using the remote, including adding softkeys to the displaythe softkey descriptions as well as displaying the equipment IR codes etc... there is also a pdf listing all the pre-programmed in codes that can be used, and how to use the code number to manually preset the IR code of the seperate item. I didn't find any mention of how to use the 'code' button in the Roksan remote manual. For example; page 11 explains how to change the layout of the soft keys...
http://www.sun-wave.com/indexe.php?module=downloade&files=downloade&product_id=1173064083&title=Download&title2=SRC-1600
...anyway, there is mention on page 22 of a protection feature that disables the sending of the ir code when a button is pressed if the remote has been inactive for 15 seconds; is this what you are seeing? (although if you move the remote, it wil take it back out of the 'inactive' mode... so I suspect not...?
...I have had a play with this rmx-108, and I have found no issues with it. There are a couple of caveats to that tho... (I used the input select function so that it cycled through the inputs rather than the volume control!) If you press a button repeatedly, it can miss button presses if there is not sufficient time between each button press. Pressing every half second or so, there is no issue at all, trying to press as fast as you can, and it will miss every so often! (I suspect this is due to it rquiring a finite time to respond).
The other caveat is if you keep your button depressed, it will respond with one beep but repaet the commands at a preset rate. But after 40 or 50 it will stop unless you remove your finger.
I have not checked out the usage for the RMX-111/SRC-1200, but suspect there may be more useful info for that as well... Maybe this will be usefull to someone tho? (I didn't mean to pinch the thread, just thought it might be usefull and relevant!) `¬)