Update: now you can use the new DSI fix module (dsifix v2.1), that is a new DSI fix solution that not relate the suspend program, so there is no more suspend issue now.
If you have flashed the recently CyanogenMod 7 RC11 / RC12 for Milestone A853, you should temporary disable the dsifix module, because it will make the phone can not suspend mode when the fix is working after some time. To turn off it, just rename the file “dsifix.ko” to “dsifix.ko.1” in folder “/system/lib/module/”.
if you want to avoid this issue without disable the dsifix module, you can connect your phone with the usb cable, that will recover the error state, but the next error will appear again after some time, this has explained why some people suffered battery drain when they have update to the new rom, when the issue occur, you show only saw the Android OS eats more than 50% battery even the phone is not being use.
Also i find out another bug cause by the dsifix module, see How to active and control the touch-to-focus mode on the CyanogenMod 7.1 (update)
Nadlabak is testing a new dsifix module, I will be waiting for the next build. Good job Nadlabak.