Using firmware revision 7.4.7 or higher, I've noticed a bit of instability with the LEDs on our SPA500S sidecars (SPA504G). The BLF lights will randomly go/stay orange on some of the buttons for no reason. I'm not 100% sure, but it appears to happen more often if the user has a voice mail message. For some reason 7.4.6 seems to be much more stable, but I lose a lot of functionality and bug fixes downgrading to this firmware. Does anyone have any suggestions regarding this issue (i.e. settings)? Thanks for your time!