I saw some people complaining about the GSM hangups (including me), so if you let the phone sleep, you wont recieve any call. The caller will hear the same tones, as if you dont pick up the call. If you send an sms on a phone in such state, it will only appear after turning it on manually (often having duplicate SMS). When you turn the phone on - you wont even get a missed call, no signs of anything.
This problem is very hard to reproduce, it happens from time to time.
I've tried to flash any other ICS based rom on the phone - any has the same problem. The only rom i hadn't such issue is 2.3 stock/modified. But i want ICS!
Anyone have any thoughts, what can be causing this? I'm tired of this happening, people complain that the cant tell me something urgent, and i dont even know they wanted to.
UPD: There is a parial fix for this issue by Maruzko by installing an app that prevents deep sleep (but thats battery consuming offcourse).
I think that there should be some internal fix for this issue, only devs can help up with that.
UPD2: My opinion that problems that people have with clock not synced is somehow connected, coz when you turn on the phone in that state, you see the clock changing rapidly and stopping at wrong time, so changed title to include that also.
UPD3: There is an alternative way to fix the issue, but not much tested. Thanx to sideshow03.
Tests and reports are much appreciated.