I was disappointed to read that SABRE (the global airline res. system) is to be taken off mainframes running TPF. They used to quote ridiculous donwtime costs (something like USD1m per minute), due to the fact that they handled up to 9000 transactions per second. They're porting the system to Compaq NonStop, of which I (currently) know nothing, but I'll be looking into it. A few thousand TPF apps and ops programmers could be re-training in a few year, methinks.