Remember that 4.0.5, there a lot of problems with Failover.. you must make sure you are all the current patches for Unity with this version. SP and a few other patches seem to stablize 4.0.5. Out of the box, 4.0.5 runs fine, but if you want to run failover, you must install the patches.
You can try and look into the SQL replication process if you are good at SQL. You may see SQL login errors, or just plain and simple, Failover is not configured correctly.
Another good test I have found is that, yes the greetings are not replicating over, but if you try and configure for instance Caller Input settings on a greeting, these do not replicate also, which throws the red flag up, SQL is not running correctly or replcating to it's partner.
If your licensing is not replicating either, then you can pretty much just uninstall Failover and reinstall it again and try it from scratch. (failover wizard). I have battle 4.0.5 many times and always loose. I end up calling TAC and they battle for a couple hours also.
Another good one to check is your NIC cards they are running as Fault Talerent and not load balancing. This will throw SQL replication off as well. Try it using 1 NIC card in each server and see this fixes it. (quick test)
hope this helps
