craigb
Or when you finally get around to installing several software upgrades and find that you accidentally bought the same upgrade twice...
OR you buy a software upgrade, then after the purchase has gone thru you go into panic mode because you think you bought the same upgrade you've already got and you send a message to customer service begging for your money back. then you go and find out for certain that you DIDN'T purchase the upgrade twice, so when customer service is nice enough to offer you a refund you have to tell them what a
nutjob doofus you are and that you do indeed want to keep said purchase.