Sent From My Sprint Black Ice Galaxy Nexus
It could also be how you install things. These are my steps of installing new Roms.
1. Wipe data (wipe cache is t necessary because this already formats the cache.)
2. Go into mounts and storage and Format /system.
3. Wipe dalvik cache.
4. Flash rom.
This is probably the cleanest install you can get.
Sent From My Sprint Galaxy Nexus via XDA Premium