I have had a developer with anger issues expect 100% success with FTP file transfers, and anything that failed was 100% my fault as a Linux/Oracle administrator.

These FTP sessions were running over WANs connecting Pennsylvania, Iowa, and Tennessee.

I ended up writing him an "until curl ftp://...; do echo it failed again; done" loop which calmed that particular issue down.

I don't miss that guy, not even 1%. Good riddance.