Ask Slashdot: What Software (Or Hardware) Glitch Makes You Angry?

This question was inspired when Slashdot reader TheRealHocusLocus found their laptop "in the throes of a Windows 10 Update," where "progress has rolled past 100% several times and started over."
I pushed the re-schedule dialogue to the rear and left it waiting. But my application did not count as activity and I left for a few moments, so Windows decided to answer its own question and restart (breaking a persistent Internet connection)... I've had it. Upon due consideration I now conclude I have been personally f*ck'd with. Driver availability, my apps and WINE permitting, this machine is getting Linux or pre-Windows-8...
That's mine, now let's hear about the things that are pushing you over the edge this very minute. Phones, software, power windows, anything.
There's a longer version of this story in the original submission -- but what's bugging you today? Leave your best answers in the comments. What software (or hardware glitch) makes you angry?