Going along with the testing theme--
My company recently released a new version of our agent which was supposed to support a specific version of Hive. A very big and influential customer has been waiting for this for quite some time. You can probably guess where this is going.
It didn't work. There were multiple issues with it, including in some cases crashing the server, but I dealt with one that was a real beauty. No crash, but it just plain didn't work. Threw a bunch of errors and sat in the corner pouting.
The problem? Oh, there was a code change in Hive, wherein a big B was changed to a little b. No big deal. It only broke our agent, which was supposed to support this specific version, which the customer had been waiting on for I don't even know how long.

Is it really a necro, when the thread is only #2 on the page?