Grrr...

Here are two things that really annoy me:
1. When you hold the door for me and I say thank you, then I hold the door for you and you say nothing. To the girl from this morning: Just because you held the door for me it doesn't excuse you from saying thank you.
2. People that sit at the computer work stations who have no intention of using the computer. There are a limited number of computers and plenty of open seats. Is it that hard to be courteous?