You should flash the specific RIL for your baseband... REGARDLESS OF THE ROM YOU ARE USING...
OBVIOUSLY IT MUST BE STOCK BASED ICS (FLASH IN RECOVERY NO WIPE)
Example: if the last official update (update.app) you did was B926 then you should flash B926 RIL
IF YOU ARE HAVING RANDOM REBOOTS AND NETWORK PROBLEMS THIS COULD RESOLVE YOUR PROBLEMS.