You know what I hate? (Well, a few things out of the many things I hate)
Computer illitterates whose solution for every computer problem is banging on the keyboard, yelling, cursing and hitting the reset button. Yes, there's one sitting next to me in the university's computer room right now. Five bloody resets in five bloody minutes. Argh.

Oh, and I hate it when I get no reply to emails that specifically asked for a reply or at least an acknowledgement that the email has been received.

Yes, I'm feeling cranky today. Today looks like it's going to be another rotten, awful Wednesday. Graaaar. ><