Thank you Douglas and Steve for responding.

I did google "Delayed Write Failed" and everything I found didn't quite help. I will take Steve's advice, and not restore from backup to replace the new files. I just find it too much of a coincidence that the error message started happening right after the service pack was installed.

I eliminated opportunistic locking enabled/disabled as the problem.

Late last night, I rebooted the server that has Adagio, thinking that would fix the situation. It did not. Everything looks to be working fine with that server in all other aspects.

In any event, it seems that Adagio is still working properly, i.e employees are entering data, batches are being processed, etc. The only error message anyone gets is that "Delayed Write Failed" error.

I have a call into our dealer asking for assistance, but they have not responded back yet.

The mystery continues....

--Andrew