The crank spider interface and lock-ring thread should have blue Loctite on from the factory, and if you remove the lock-ring and / or the spider the old Loctite should be removed and fresh Loctite added. If it is not used you get a very similar tick / crack to that which a rough BB will make.
Loctiting the bearings in and / or the axle to the bearing surface is not done at the factory and should be done only as a last resort. The adoption of PF30 makes it pretty unlikely you'd need to do this.
I read that the 641 bearing/retaining compound, rather than other loctite glues, is safer to use as it is designed to fill gaps, retain bearings but not be permanent like a glue.
The crank spider interface and lock-ring thread should have blue Loctite on from the factory, and if you remove the lock-ring and / or the spider the old Loctite should be removed and fresh Loctite added. If it is not used you get a very similar tick / crack to that which a rough BB will make.
Loctiting the bearings in and / or the axle to the bearing surface is not done at the factory and should be done only as a last resort. The adoption of PF30 makes it pretty unlikely you'd need to do this.