As Claus already wrote, the repeat settings of the MLD 6.5 WebIF are for keyboards and RemoteControl receivers.
For RC receivers there are also repeat settings in the VDR settings.
VDR uses this VDR repeat-settings preferred and uses the WebIF settings only, when the VDR-settings are set to 0.
Per default in MLD 6.5 the VDR settings are set to 0, that the RC receivers are using the global WebIF settings.
My external USB X10 RC receivers are all working fine with the default global settings.
But with this external X10 receivers it is not possible to wake up the system, even when the MB supports wake up on USB by keyboard.
Only the REC100 MB and RF receiver has a special wake on RF receiver functionality.
Maybe because of this special functionality the ati_remote module had problems with that receiver and therefore is not any more supported by newer kernel versions.
The patched ati_remote module now knows that receiver, but maybe supports it not perfect because of its special functionality.
I can confirm, that also my REC100 receiver has that problem with multi clicks in the VDR-OSD by pressing a RC button, when I was using the default global repeat settings.
I again tested different global repeat settings and found a setting (Delay before start repeat = 350ms / Speed of repeat = 7/s) which works fine with my REC100 X10 RF receiver.
@Marcin
I suggest, that you test this global settings in the WebIF.
After changing the repeat settings in the WebIF, the VDR settings will be automatically set to 0 again.
You should reboot the system(WebIF -Services) after changing the settings.
If those repeat values of the WebIF settings are still not working properly with your RC, test first other repeat settings.
Only if your RC receiver has still problems with the WebIF settings, you should try again different VDR repeat settings.