Seems some users still have problems with SR enabled. Luckily today I flashed my sister's n900 with latest KP and for my surprise as soon as I load dsp profile (which i thought is rock stable) her phone started with reboots. So now I can check what's wrong with SR on some phones. So I would ask you to hold promotion of KP49 to extras-devel for a while until I either found what is the problem or give up on fixing it. In case I am unable to fix SR unstability I think we will need a new kernel-power-settings with SR disabled by default.