>I've done the 'bomb' thing before, but what it did was just disable our software. Here's a good example - we had some software that did auto-insurance pricing - people leased the software and we went updates out every couple of weeks (rates change a lot).

Thanks Victor.
I'm sure you've thought about this and you have a good reason, but I'have to ask. Why not let the client change the rate anytime they want w/o you having to update them?
I think I know the answer, but let me hear it..... ;)